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Diffstat (limited to 'libs/raylib/src/models.c')
| -rw-r--r-- | libs/raylib/src/models.c | 3678 |
1 files changed, 3678 insertions, 0 deletions
diff --git a/libs/raylib/src/models.c b/libs/raylib/src/models.c new file mode 100644 index 0000000..ba913e0 --- /dev/null +++ b/libs/raylib/src/models.c @@ -0,0 +1,3678 @@ +/********************************************************************************************** +* +* raylib.models - Basic functions to deal with 3d shapes and 3d models +* +* CONFIGURATION: +* +* #define SUPPORT_FILEFORMAT_OBJ +* #define SUPPORT_FILEFORMAT_MTL +* #define SUPPORT_FILEFORMAT_IQM +* #define SUPPORT_FILEFORMAT_GLTF +* Selected desired fileformats to be supported for model data loading. +* +* #define SUPPORT_MESH_GENERATION +* Support procedural mesh generation functions, uses external par_shapes.h library +* NOTE: Some generated meshes DO NOT include generated texture coordinates +* +* +* LICENSE: zlib/libpng +* +* Copyright (c) 2013-2020 Ramon Santamaria (@raysan5) +* +* This software is provided "as-is", without any express or implied warranty. In no event +* will the authors be held liable for any damages arising from the use of this software. +* +* Permission is granted to anyone to use this software for any purpose, including commercial +* applications, and to alter it and redistribute it freely, subject to the following restrictions: +* +* 1. The origin of this software must not be misrepresented; you must not claim that you +* wrote the original software. If you use this software in a product, an acknowledgment +* in the product documentation would be appreciated but is not required. +* +* 2. Altered source versions must be plainly marked as such, and must not be misrepresented +* as being the original software. +* +* 3. This notice may not be removed or altered from any source distribution. +* +**********************************************************************************************/ + +#include "raylib.h" // Declares module functions + +// Check if config flags have been externally provided on compilation line +#if !defined(EXTERNAL_CONFIG_FLAGS) + #include "config.h" // Defines module configuration flags +#endif + +#include "utils.h" // Required for: fopen() Android mapping + +#include <stdio.h> // Required for: FILE, fopen(), fclose(), fscanf(), feof(), rewind(), fgets() +#include <stdlib.h> // Required for: malloc(), free() +#include <string.h> // Required for: strcmp() +#include <math.h> // Required for: sin(), cos() + +#include "rlgl.h" // raylib OpenGL abstraction layer to OpenGL 1.1, 2.1, 3.3+ or ES2 + +#if defined(SUPPORT_FILEFORMAT_OBJ) || defined(SUPPORT_FILEFORMAT_MTL) + #define TINYOBJ_LOADER_C_IMPLEMENTATION + #include "external/tinyobj_loader_c.h" // OBJ/MTL file formats loading +#endif + +#if defined(SUPPORT_FILEFORMAT_GLTF) + #define CGLTF_IMPLEMENTATION + #include "external/cgltf.h" // glTF file format loading + #include "external/stb_image.h" // glTF texture images loading +#endif + +#if defined(SUPPORT_MESH_GENERATION) + #define PAR_SHAPES_IMPLEMENTATION + #include "external/par_shapes.h" // Shapes 3d parametric generation +#endif + +//---------------------------------------------------------------------------------- +// Defines and Macros +//---------------------------------------------------------------------------------- +#define MAX_MESH_VBO 7 // Maximum number of vbo per mesh + +//---------------------------------------------------------------------------------- +// Types and Structures Definition +//---------------------------------------------------------------------------------- +// ... + +//---------------------------------------------------------------------------------- +// Global Variables Definition +//---------------------------------------------------------------------------------- +// ... + +//---------------------------------------------------------------------------------- +// Module specific Functions Declaration +//---------------------------------------------------------------------------------- +#if defined(SUPPORT_FILEFORMAT_OBJ) +static Model LoadOBJ(const char *fileName); // Load OBJ mesh data +#endif +#if defined(SUPPORT_FILEFORMAT_IQM) +static Model LoadIQM(const char *fileName); // Load IQM mesh data +#endif +#if defined(SUPPORT_FILEFORMAT_GLTF) +static Model LoadGLTF(const char *fileName); // Load GLTF mesh data +#endif + +//---------------------------------------------------------------------------------- +// Module Functions Definition +//---------------------------------------------------------------------------------- + +// Draw a line in 3D world space +void DrawLine3D(Vector3 startPos, Vector3 endPos, Color color) +{ + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlVertex3f(startPos.x, startPos.y, startPos.z); + rlVertex3f(endPos.x, endPos.y, endPos.z); + rlEnd(); +} + +// Draw a point in 3D space--actually a small line. +void DrawPoint3D(Vector3 position, Color color) +{ + if (rlCheckBufferLimit(8)) rlglDraw(); + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlVertex3f(0.0,0.0,0.0); + rlVertex3f(0.0,0.0,0.1); + rlEnd(); + rlPopMatrix(); +} + +// Draw a circle in 3D world space +void DrawCircle3D(Vector3 center, float radius, Vector3 rotationAxis, float rotationAngle, Color color) +{ + if (rlCheckBufferLimit(2*36)) rlglDraw(); + + rlPushMatrix(); + rlTranslatef(center.x, center.y, center.z); + rlRotatef(rotationAngle, rotationAxis.x, rotationAxis.y, rotationAxis.z); + + rlBegin(RL_LINES); + for (int i = 0; i < 360; i += 10) + { + rlColor4ub(color.r, color.g, color.b, color.a); + + rlVertex3f(sinf(DEG2RAD*i)*radius, cosf(DEG2RAD*i)*radius, 0.0f); + rlVertex3f(sinf(DEG2RAD*(i + 10))*radius, cosf(DEG2RAD*(i + 10))*radius, 0.0f); + } + rlEnd(); + rlPopMatrix(); +} + +// Draw cube +// NOTE: Cube position is the center position +void DrawCube(Vector3 position, float width, float height, float length, Color color) +{ + float x = 0.0f; + float y = 0.0f; + float z = 0.0f; + + if (rlCheckBufferLimit(36)) rlglDraw(); + + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> rotate -> translate) + rlTranslatef(position.x, position.y, position.z); + //rlRotatef(45, 0, 1, 0); + //rlScalef(1.0f, 1.0f, 1.0f); // NOTE: Vertices are directly scaled on definition + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + // Front face + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + + // Back face + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Left + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + + // Top face + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + rlVertex3f(x - width/2, y + height/2, z + length/2); // Bottom Left + rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right + + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left + rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right + + // Bottom face + rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Left + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left + + rlVertex3f(x + width/2, y - height/2, z - length/2); // Top Right + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right + rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Left + + // Right face + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left + + rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left + rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left + + // Left face + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Right + + rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left + rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left + rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right + rlEnd(); + rlPopMatrix(); +} + +// Draw cube (Vector version) +void DrawCubeV(Vector3 position, Vector3 size, Color color) +{ + DrawCube(position, size.x, size.y, size.z, color); +} + +// Draw cube wires +void DrawCubeWires(Vector3 position, float width, float height, float length, Color color) +{ + float x = 0.0f; + float y = 0.0f; + float z = 0.0f; + + if (rlCheckBufferLimit(36)) rlglDraw(); + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + // Front Face ----------------------------------------------------- + // Bottom Line + rlVertex3f(x-width/2, y-height/2, z+length/2); // Bottom Left + rlVertex3f(x+width/2, y-height/2, z+length/2); // Bottom Right + + // Left Line + rlVertex3f(x+width/2, y-height/2, z+length/2); // Bottom Right + rlVertex3f(x+width/2, y+height/2, z+length/2); // Top Right + + // Top Line + rlVertex3f(x+width/2, y+height/2, z+length/2); // Top Right + rlVertex3f(x-width/2, y+height/2, z+length/2); // Top Left + + // Right Line + rlVertex3f(x-width/2, y+height/2, z+length/2); // Top Left + rlVertex3f(x-width/2, y-height/2, z+length/2); // Bottom Left + + // Back Face ------------------------------------------------------ + // Bottom Line + rlVertex3f(x-width/2, y-height/2, z-length/2); // Bottom Left + rlVertex3f(x+width/2, y-height/2, z-length/2); // Bottom Right + + // Left Line + rlVertex3f(x+width/2, y-height/2, z-length/2); // Bottom Right + rlVertex3f(x+width/2, y+height/2, z-length/2); // Top Right + + // Top Line + rlVertex3f(x+width/2, y+height/2, z-length/2); // Top Right + rlVertex3f(x-width/2, y+height/2, z-length/2); // Top Left + + // Right Line + rlVertex3f(x-width/2, y+height/2, z-length/2); // Top Left + rlVertex3f(x-width/2, y-height/2, z-length/2); // Bottom Left + + // Top Face ------------------------------------------------------- + // Left Line + rlVertex3f(x-width/2, y+height/2, z+length/2); // Top Left Front + rlVertex3f(x-width/2, y+height/2, z-length/2); // Top Left Back + + // Right Line + rlVertex3f(x+width/2, y+height/2, z+length/2); // Top Right Front + rlVertex3f(x+width/2, y+height/2, z-length/2); // Top Right Back + + // Bottom Face --------------------------------------------------- + // Left Line + rlVertex3f(x-width/2, y-height/2, z+length/2); // Top Left Front + rlVertex3f(x-width/2, y-height/2, z-length/2); // Top Left Back + + // Right Line + rlVertex3f(x+width/2, y-height/2, z+length/2); // Top Right Front + rlVertex3f(x+width/2, y-height/2, z-length/2); // Top Right Back + rlEnd(); + rlPopMatrix(); +} + +// Draw cube wires (vector version) +void DrawCubeWiresV(Vector3 position, Vector3 size, Color color) +{ + DrawCubeWires(position, size.x, size.y, size.z, color); +} + +// Draw cube +// NOTE: Cube position is the center position +void DrawCubeTexture(Texture2D texture, Vector3 position, float width, float height, float length, Color color) +{ + float x = position.x; + float y = position.y; + float z = position.z; + + if (rlCheckBufferLimit(36)) rlglDraw(); + + rlEnableTexture(texture.id); + + //rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> rotate -> translate) + //rlTranslatef(2.0f, 0.0f, 0.0f); + //rlRotatef(45, 0, 1, 0); + //rlScalef(2.0f, 2.0f, 2.0f); + + rlBegin(RL_QUADS); + rlColor4ub(color.r, color.g, color.b, color.a); + // Front Face + rlNormal3f(0.0f, 0.0f, 1.0f); // Normal Pointing Towards Viewer + rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad + rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad + rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Right Of The Texture and Quad + rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Left Of The Texture and Quad + // Back Face + rlNormal3f(0.0f, 0.0f, - 1.0f); // Normal Pointing Away From Viewer + rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Right Of The Texture and Quad + rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad + rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad + rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Left Of The Texture and Quad + // Top Face + rlNormal3f(0.0f, 1.0f, 0.0f); // Normal Pointing Up + rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad + rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Bottom Left Of The Texture and Quad + rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Bottom Right Of The Texture and Quad + rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad + // Bottom Face + rlNormal3f(0.0f, - 1.0f, 0.0f); // Normal Pointing Down + rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Top Right Of The Texture and Quad + rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Top Left Of The Texture and Quad + rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad + rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad + // Right face + rlNormal3f(1.0f, 0.0f, 0.0f); // Normal Pointing Right + rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z - length/2); // Bottom Right Of The Texture and Quad + rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z - length/2); // Top Right Of The Texture and Quad + rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x + width/2, y + height/2, z + length/2); // Top Left Of The Texture and Quad + rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x + width/2, y - height/2, z + length/2); // Bottom Left Of The Texture and Quad + // Left Face + rlNormal3f( - 1.0f, 0.0f, 0.0f); // Normal Pointing Left + rlTexCoord2f(0.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z - length/2); // Bottom Left Of The Texture and Quad + rlTexCoord2f(1.0f, 0.0f); rlVertex3f(x - width/2, y - height/2, z + length/2); // Bottom Right Of The Texture and Quad + rlTexCoord2f(1.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z + length/2); // Top Right Of The Texture and Quad + rlTexCoord2f(0.0f, 1.0f); rlVertex3f(x - width/2, y + height/2, z - length/2); // Top Left Of The Texture and Quad + rlEnd(); + //rlPopMatrix(); + + rlDisableTexture(); +} + +// Draw sphere +void DrawSphere(Vector3 centerPos, float radius, Color color) +{ + DrawSphereEx(centerPos, radius, 16, 16, color); +} + +// Draw sphere with extended parameters +void DrawSphereEx(Vector3 centerPos, float radius, int rings, int slices, Color color) +{ + int numVertex = (rings + 2)*slices*6; + if (rlCheckBufferLimit(numVertex)) rlglDraw(); + + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> translate) + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(radius, radius, radius); + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < (rings + 2); i++) + { + for (int j = 0; j < slices; j++) + { + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*i))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*i)), + cosf(DEG2RAD*(270+(180/(rings + 1))*i))*cosf(DEG2RAD*(j*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*((j+1)*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*((j+1)*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*(j*360/slices))); + + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*i))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*i)), + cosf(DEG2RAD*(270+(180/(rings + 1))*i))*cosf(DEG2RAD*(j*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i)))*sinf(DEG2RAD*((j+1)*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i)))*cosf(DEG2RAD*((j+1)*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*((j+1)*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*((j+1)*360/slices))); + } + } + rlEnd(); + rlPopMatrix(); +} + +// Draw sphere wires +void DrawSphereWires(Vector3 centerPos, float radius, int rings, int slices, Color color) +{ + int numVertex = (rings + 2)*slices*6; + if (rlCheckBufferLimit(numVertex)) rlglDraw(); + + rlPushMatrix(); + // NOTE: Transformation is applied in inverse order (scale -> translate) + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(radius, radius, radius); + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < (rings + 2); i++) + { + for (int j = 0; j < slices; j++) + { + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*i))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*i)), + cosf(DEG2RAD*(270+(180/(rings + 1))*i))*cosf(DEG2RAD*(j*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*((j+1)*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*((j+1)*360/slices))); + + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*((j+1)*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*((j+1)*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*(j*360/slices))); + + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*(i+1))), + cosf(DEG2RAD*(270+(180/(rings + 1))*(i+1)))*cosf(DEG2RAD*(j*360/slices))); + rlVertex3f(cosf(DEG2RAD*(270+(180/(rings + 1))*i))*sinf(DEG2RAD*(j*360/slices)), + sinf(DEG2RAD*(270+(180/(rings + 1))*i)), + cosf(DEG2RAD*(270+(180/(rings + 1))*i))*cosf(DEG2RAD*(j*360/slices))); + } + } + rlEnd(); + rlPopMatrix(); +} + +// Draw a cylinder +// NOTE: It could be also used for pyramid and cone +void DrawCylinder(Vector3 position, float radiusTop, float radiusBottom, float height, int sides, Color color) +{ + if (sides < 3) sides = 3; + + int numVertex = sides*6; + if (rlCheckBufferLimit(numVertex)) rlglDraw(); + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + + rlBegin(RL_TRIANGLES); + rlColor4ub(color.r, color.g, color.b, color.a); + + if (radiusTop > 0) + { + // Draw Body ------------------------------------------------------------------------------------- + for (int i = 0; i < 360; i += 360/sides) + { + rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); //Bottom Left + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360/sides))*radiusBottom); //Bottom Right + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360/sides))*radiusTop); //Top Right + + rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop); //Top Left + rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); //Bottom Left + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360/sides))*radiusTop); //Top Right + } + + // Draw Cap -------------------------------------------------------------------------------------- + for (int i = 0; i < 360; i += 360/sides) + { + rlVertex3f(0, height, 0); + rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop); + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360/sides))*radiusTop); + } + } + else + { + // Draw Cone ------------------------------------------------------------------------------------- + for (int i = 0; i < 360; i += 360/sides) + { + rlVertex3f(0, height, 0); + rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360/sides))*radiusBottom); + } + } + + // Draw Base ----------------------------------------------------------------------------------------- + for (int i = 0; i < 360; i += 360/sides) + { + rlVertex3f(0, 0, 0); + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360/sides))*radiusBottom); + rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); + } + rlEnd(); + rlPopMatrix(); +} + +// Draw a wired cylinder +// NOTE: It could be also used for pyramid and cone +void DrawCylinderWires(Vector3 position, float radiusTop, float radiusBottom, float height, int sides, Color color) +{ + if (sides < 3) sides = 3; + + int numVertex = sides*8; + if (rlCheckBufferLimit(numVertex)) rlglDraw(); + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + + for (int i = 0; i < 360; i += 360/sides) + { + rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360/sides))*radiusBottom); + + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusBottom, 0, cosf(DEG2RAD*(i + 360/sides))*radiusBottom); + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360/sides))*radiusTop); + + rlVertex3f(sinf(DEG2RAD*(i + 360/sides))*radiusTop, height, cosf(DEG2RAD*(i + 360/sides))*radiusTop); + rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop); + + rlVertex3f(sinf(DEG2RAD*i)*radiusTop, height, cosf(DEG2RAD*i)*radiusTop); + rlVertex3f(sinf(DEG2RAD*i)*radiusBottom, 0, cosf(DEG2RAD*i)*radiusBottom); + } + rlEnd(); + rlPopMatrix(); +} + +// Draw a plane +void DrawPlane(Vector3 centerPos, Vector2 size, Color color) +{ + if (rlCheckBufferLimit(4)) rlglDraw(); + + // NOTE: Plane is always created on XZ ground + rlPushMatrix(); + rlTranslatef(centerPos.x, centerPos.y, centerPos.z); + rlScalef(size.x, 1.0f, size.y); + + rlBegin(RL_QUADS); + rlColor4ub(color.r, color.g, color.b, color.a); + rlNormal3f(0.0f, 1.0f, 0.0f); + + rlVertex3f(-0.5f, 0.0f, -0.5f); + rlVertex3f(-0.5f, 0.0f, 0.5f); + rlVertex3f(0.5f, 0.0f, 0.5f); + rlVertex3f(0.5f, 0.0f, -0.5f); + rlEnd(); + rlPopMatrix(); +} + +// Draw a ray line +void DrawRay(Ray ray, Color color) +{ + float scale = 10000; + + rlBegin(RL_LINES); + rlColor4ub(color.r, color.g, color.b, color.a); + rlColor4ub(color.r, color.g, color.b, color.a); + + rlVertex3f(ray.position.x, ray.position.y, ray.position.z); + rlVertex3f(ray.position.x + ray.direction.x*scale, ray.position.y + ray.direction.y*scale, ray.position.z + ray.direction.z*scale); + rlEnd(); +} + +// Draw a grid centered at (0, 0, 0) +void DrawGrid(int slices, float spacing) +{ + int halfSlices = slices/2; + + if (rlCheckBufferLimit(slices*4)) rlglDraw(); + + rlBegin(RL_LINES); + for (int i = -halfSlices; i <= halfSlices; i++) + { + if (i == 0) + { + rlColor3f(0.5f, 0.5f, 0.5f); + rlColor3f(0.5f, 0.5f, 0.5f); + rlColor3f(0.5f, 0.5f, 0.5f); + rlColor3f(0.5f, 0.5f, 0.5f); + } + else + { + rlColor3f(0.75f, 0.75f, 0.75f); + rlColor3f(0.75f, 0.75f, 0.75f); + rlColor3f(0.75f, 0.75f, 0.75f); + rlColor3f(0.75f, 0.75f, 0.75f); + } + + rlVertex3f((float)i*spacing, 0.0f, (float)-halfSlices*spacing); + rlVertex3f((float)i*spacing, 0.0f, (float)halfSlices*spacing); + + rlVertex3f((float)-halfSlices*spacing, 0.0f, (float)i*spacing); + rlVertex3f((float)halfSlices*spacing, 0.0f, (float)i*spacing); + } + rlEnd(); +} + +// Draw gizmo +void DrawGizmo(Vector3 position) +{ + // NOTE: RGB = XYZ + float length = 1.0f; + + rlPushMatrix(); + rlTranslatef(position.x, position.y, position.z); + rlScalef(length, length, length); + + rlBegin(RL_LINES); + rlColor3f(1.0f, 0.0f, 0.0f); rlVertex3f(0.0f, 0.0f, 0.0f); + rlColor3f(1.0f, 0.0f, 0.0f); rlVertex3f(1.0f, 0.0f, 0.0f); + + rlColor3f(0.0f, 1.0f, 0.0f); rlVertex3f(0.0f, 0.0f, 0.0f); + rlColor3f(0.0f, 1.0f, 0.0f); rlVertex3f(0.0f, 1.0f, 0.0f); + + rlColor3f(0.0f, 0.0f, 1.0f); rlVertex3f(0.0f, 0.0f, 0.0f); + rlColor3f(0.0f, 0.0f, 1.0f); rlVertex3f(0.0f, 0.0f, 1.0f); + rlEnd(); + rlPopMatrix(); +} + +// Load model from files (mesh and material) +Model LoadModel(const char *fileName) +{ + Model model = { 0 }; + +#if defined(SUPPORT_FILEFORMAT_OBJ) + if (IsFileExtension(fileName, ".obj")) model = LoadOBJ(fileName); +#endif +#if defined(SUPPORT_FILEFORMAT_IQM) + if (IsFileExtension(fileName, ".iqm")) model = LoadIQM(fileName); +#endif +#if defined(SUPPORT_FILEFORMAT_GLTF) + if (IsFileExtension(fileName, ".gltf") || IsFileExtension(fileName, ".glb")) model = LoadGLTF(fileName); +#endif + + // Make sure model transform is set to identity matrix! + model.transform = MatrixIdentity(); + + if (model.meshCount == 0) + { + model.meshCount = 1; + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); +#if defined(SUPPORT_MESH_GENERATION) + TraceLog(LOG_WARNING, "[%s] No meshes can be loaded, default to cube mesh", fileName); + model.meshes[0] = GenMeshCube(1.0f, 1.0f, 1.0f); +#else + TraceLog(LOG_WARNING, "[%s] No meshes can be loaded, and can't create a default mesh. The raylib mesh generation is not supported (SUPPORT_MESH_GENERATION).", fileName); +#endif + } + else + { + // Upload vertex data to GPU (static mesh) + for (int i = 0; i < model.meshCount; i++) rlLoadMesh(&model.meshes[i], false); + } + + if (model.materialCount == 0) + { + TraceLog(LOG_WARNING, "[%s] No materials can be loaded, default to white material", fileName); + + model.materialCount = 1; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + model.materials[0] = LoadMaterialDefault(); + + if (model.meshMaterial == NULL) model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + } + + return model; +} + +// Load model from generated mesh +// WARNING: A shallow copy of mesh is generated, passed by value, +// as long as struct contains pointers to data and some values, we get a copy +// of mesh pointing to same data as original version... be careful! +Model LoadModelFromMesh(Mesh mesh) +{ + Model model = { 0 }; + + model.transform = MatrixIdentity(); + + model.meshCount = 1; + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); + model.meshes[0] = mesh; + + model.materialCount = 1; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + model.materials[0] = LoadMaterialDefault(); + + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + model.meshMaterial[0] = 0; // First material index + + return model; +} + +// Unload model from memory (RAM and/or VRAM) +void UnloadModel(Model model) +{ + for (int i = 0; i < model.meshCount; i++) UnloadMesh(model.meshes[i]); + + // As the user could be sharing shaders and textures between models, + // we don't unload the material but just free it's maps, the user + // is responsible for freeing models shaders and textures + for (int i = 0; i < model.materialCount; i++) RL_FREE(model.materials[i].maps); + + RL_FREE(model.meshes); + RL_FREE(model.materials); + RL_FREE(model.meshMaterial); + + // Unload animation data + RL_FREE(model.bones); + RL_FREE(model.bindPose); + + TraceLog(LOG_INFO, "Unloaded model data from RAM and VRAM"); +} + +// Load meshes from model file +Mesh *LoadMeshes(const char *fileName, int *meshCount) +{ + Mesh *meshes = NULL; + int count = 0; + + // TODO: Load meshes from file (OBJ, IQM, GLTF) + + *meshCount = count; + return meshes; +} + +// Unload mesh from memory (RAM and/or VRAM) +void UnloadMesh(Mesh mesh) +{ + rlUnloadMesh(mesh); + RL_FREE(mesh.vboId); +} + +// Export mesh data to file +void ExportMesh(Mesh mesh, const char *fileName) +{ + bool success = false; + + if (IsFileExtension(fileName, ".obj")) + { + FILE *objFile = fopen(fileName, "wt"); + + fprintf(objFile, "# //////////////////////////////////////////////////////////////////////////////////\n"); + fprintf(objFile, "# // //\n"); + fprintf(objFile, "# // rMeshOBJ exporter v1.0 - Mesh exported as triangle faces and not optimized //\n"); + fprintf(objFile, "# // //\n"); + fprintf(objFile, "# // more info and bugs-report: github.com/raysan5/raylib //\n"); + fprintf(objFile, "# // feedback and support: ray[at]raylib.com //\n"); + fprintf(objFile, "# // //\n"); + fprintf(objFile, "# // Copyright (c) 2018 Ramon Santamaria (@raysan5) //\n"); + fprintf(objFile, "# // //\n"); + fprintf(objFile, "# //////////////////////////////////////////////////////////////////////////////////\n\n"); + fprintf(objFile, "# Vertex Count: %i\n", mesh.vertexCount); + fprintf(objFile, "# Triangle Count: %i\n\n", mesh.triangleCount); + + fprintf(objFile, "g mesh\n"); + + for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 3) + { + fprintf(objFile, "v %.2f %.2f %.2f\n", mesh.vertices[v], mesh.vertices[v + 1], mesh.vertices[v + 2]); + } + + for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 2) + { + fprintf(objFile, "vt %.2f %.2f\n", mesh.texcoords[v], mesh.texcoords[v + 1]); + } + + for (int i = 0, v = 0; i < mesh.vertexCount; i++, v += 3) + { + fprintf(objFile, "vn %.2f %.2f %.2f\n", mesh.normals[v], mesh.normals[v + 1], mesh.normals[v + 2]); + } + + for (int i = 0; i < mesh.triangleCount; i += 3) + { + fprintf(objFile, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", i, i, i, i + 1, i + 1, i + 1, i + 2, i + 2, i + 2); + } + + fprintf(objFile, "\n"); + + fclose(objFile); + + success = true; + } + else if (IsFileExtension(fileName, ".raw")) { } // TODO: Support additional file formats to export mesh vertex data + + if (success) TraceLog(LOG_INFO, "Mesh exported successfully: %s", fileName); + else TraceLog(LOG_WARNING, "Mesh could not be exported."); +} + +// Load materials from model file +Material *LoadMaterials(const char *fileName, int *materialCount) +{ + Material *materials = NULL; + unsigned int count = 0; + + // TODO: Support IQM and GLTF for materials parsing + +#if defined(SUPPORT_FILEFORMAT_MTL) + if (IsFileExtension(fileName, ".mtl")) + { + tinyobj_material_t *mats; + + int result = tinyobj_parse_mtl_file(&mats, &count, fileName); + if (result != TINYOBJ_SUCCESS) { + TraceLog(LOG_WARNING, "[%s] Could not parse Materials file", fileName); + } + + // TODO: Process materials to return + + tinyobj_materials_free(mats, count); + } +#else + TraceLog(LOG_WARNING, "[%s] Materials file not supported", fileName); +#endif + + // Set materials shader to default (DIFFUSE, SPECULAR, NORMAL) + for (int i = 0; i < count; i++) materials[i].shader = GetShaderDefault(); + + *materialCount = count; + return materials; +} + +// Load default material (Supports: DIFFUSE, SPECULAR, NORMAL maps) +Material LoadMaterialDefault(void) +{ + Material material = { 0 }; + material.maps = (MaterialMap *)RL_CALLOC(MAX_MATERIAL_MAPS, sizeof(MaterialMap)); + + material.shader = GetShaderDefault(); + material.maps[MAP_DIFFUSE].texture = GetTextureDefault(); // White texture (1x1 pixel) + //material.maps[MAP_NORMAL].texture; // NOTE: By default, not set + //material.maps[MAP_SPECULAR].texture; // NOTE: By default, not set + + material.maps[MAP_DIFFUSE].color = WHITE; // Diffuse color + material.maps[MAP_SPECULAR].color = WHITE; // Specular color + + return material; +} + +// Unload material from memory +void UnloadMaterial(Material material) +{ + // Unload material shader (avoid unloading default shader, managed by raylib) + if (material.shader.id != GetShaderDefault().id) UnloadShader(material.shader); + + // Unload loaded texture maps (avoid unloading default texture, managed by raylib) + for (int i = 0; i < MAX_MATERIAL_MAPS; i++) + { + if (material.maps[i].texture.id != GetTextureDefault().id) rlDeleteTextures(material.maps[i].texture.id); + } + + RL_FREE(material.maps); +} + +// Set texture for a material map type (MAP_DIFFUSE, MAP_SPECULAR...) +// NOTE: Previous texture should be manually unloaded +void SetMaterialTexture(Material *material, int mapType, Texture2D texture) +{ + material->maps[mapType].texture = texture; +} + +// Set the material for a mesh +void SetModelMeshMaterial(Model *model, int meshId, int materialId) +{ + if (meshId >= model->meshCount) TraceLog(LOG_WARNING, "Mesh id greater than mesh count"); + else if (materialId >= model->materialCount) TraceLog(LOG_WARNING,"Material id greater than material count"); + else model->meshMaterial[meshId] = materialId; +} + +// Load model animations from file +ModelAnimation *LoadModelAnimations(const char *filename, int *animCount) +{ + #define IQM_MAGIC "INTERQUAKEMODEL" // IQM file magic number + #define IQM_VERSION 2 // only IQM version 2 supported + + typedef struct IQMHeader { + char magic[16]; + unsigned int version; + unsigned int filesize; + unsigned int flags; + unsigned int num_text, ofs_text; + unsigned int num_meshes, ofs_meshes; + unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays; + unsigned int num_triangles, ofs_triangles, ofs_adjacency; + unsigned int num_joints, ofs_joints; + unsigned int num_poses, ofs_poses; + unsigned int num_anims, ofs_anims; + unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds; + unsigned int num_comment, ofs_comment; + unsigned int num_extensions, ofs_extensions; + } IQMHeader; + + typedef struct IQMPose { + int parent; + unsigned int mask; + float channeloffset[10]; + float channelscale[10]; + } IQMPose; + + typedef struct IQMAnim { + unsigned int name; + unsigned int first_frame, num_frames; + float framerate; + unsigned int flags; + } IQMAnim; + + FILE *iqmFile; + IQMHeader iqm; + + iqmFile = fopen(filename,"rb"); + + if (!iqmFile) + { + TraceLog(LOG_ERROR, "[%s] Unable to open file", filename); + } + + // Read IQM header + fread(&iqm, sizeof(IQMHeader), 1, iqmFile); + + if (strncmp(iqm.magic, IQM_MAGIC, sizeof(IQM_MAGIC))) + { + TraceLog(LOG_ERROR, "Magic Number \"%s\"does not match.", iqm.magic); + fclose(iqmFile); + + return NULL; + } + + if (iqm.version != IQM_VERSION) + { + TraceLog(LOG_ERROR, "IQM version %i is incorrect.", iqm.version); + fclose(iqmFile); + + return NULL; + } + + // Get bones data + IQMPose *poses = RL_MALLOC(iqm.num_poses*sizeof(IQMPose)); + fseek(iqmFile, iqm.ofs_poses, SEEK_SET); + fread(poses, iqm.num_poses*sizeof(IQMPose), 1, iqmFile); + + // Get animations data + *animCount = iqm.num_anims; + IQMAnim *anim = RL_MALLOC(iqm.num_anims*sizeof(IQMAnim)); + fseek(iqmFile, iqm.ofs_anims, SEEK_SET); + fread(anim, iqm.num_anims*sizeof(IQMAnim), 1, iqmFile); + ModelAnimation *animations = RL_MALLOC(iqm.num_anims*sizeof(ModelAnimation)); + + // frameposes + unsigned short *framedata = RL_MALLOC(iqm.num_frames*iqm.num_framechannels*sizeof(unsigned short)); + fseek(iqmFile, iqm.ofs_frames, SEEK_SET); + fread(framedata, iqm.num_frames*iqm.num_framechannels*sizeof(unsigned short), 1, iqmFile); + + for (int a = 0; a < iqm.num_anims; a++) + { + animations[a].frameCount = anim[a].num_frames; + animations[a].boneCount = iqm.num_poses; + animations[a].bones = RL_MALLOC(iqm.num_poses*sizeof(BoneInfo)); + animations[a].framePoses = RL_MALLOC(anim[a].num_frames*sizeof(Transform *)); + //animations[a].framerate = anim.framerate; // TODO: Use framerate? + + for (int j = 0; j < iqm.num_poses; j++) + { + strcpy(animations[a].bones[j].name, "ANIMJOINTNAME"); + animations[a].bones[j].parent = poses[j].parent; + } + + for (int j = 0; j < anim[a].num_frames; j++) animations[a].framePoses[j] = RL_MALLOC(iqm.num_poses*sizeof(Transform)); + + int dcounter = anim[a].first_frame*iqm.num_framechannels; + + for (int frame = 0; frame < anim[a].num_frames; frame++) + { + for (int i = 0; i < iqm.num_poses; i++) + { + animations[a].framePoses[frame][i].translation.x = poses[i].channeloffset[0]; + + if (poses[i].mask & 0x01) + { + animations[a].framePoses[frame][i].translation.x += framedata[dcounter]*poses[i].channelscale[0]; + dcounter++; + } + + animations[a].framePoses[frame][i].translation.y = poses[i].channeloffset[1]; + + if (poses[i].mask & 0x02) + { + animations[a].framePoses[frame][i].translation.y += framedata[dcounter]*poses[i].channelscale[1]; + dcounter++; + } + + animations[a].framePoses[frame][i].translation.z = poses[i].channeloffset[2]; + + if (poses[i].mask & 0x04) + { + animations[a].framePoses[frame][i].translation.z += framedata[dcounter]*poses[i].channelscale[2]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.x = poses[i].channeloffset[3]; + + if (poses[i].mask & 0x08) + { + animations[a].framePoses[frame][i].rotation.x += framedata[dcounter]*poses[i].channelscale[3]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.y = poses[i].channeloffset[4]; + + if (poses[i].mask & 0x10) + { + animations[a].framePoses[frame][i].rotation.y += framedata[dcounter]*poses[i].channelscale[4]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.z = poses[i].channeloffset[5]; + + if (poses[i].mask & 0x20) + { + animations[a].framePoses[frame][i].rotation.z += framedata[dcounter]*poses[i].channelscale[5]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation.w = poses[i].channeloffset[6]; + + if (poses[i].mask & 0x40) + { + animations[a].framePoses[frame][i].rotation.w += framedata[dcounter]*poses[i].channelscale[6]; + dcounter++; + } + + animations[a].framePoses[frame][i].scale.x = poses[i].channeloffset[7]; + + if (poses[i].mask & 0x80) + { + animations[a].framePoses[frame][i].scale.x += framedata[dcounter]*poses[i].channelscale[7]; + dcounter++; + } + + animations[a].framePoses[frame][i].scale.y = poses[i].channeloffset[8]; + + if (poses[i].mask & 0x100) + { + animations[a].framePoses[frame][i].scale.y += framedata[dcounter]*poses[i].channelscale[8]; + dcounter++; + } + + animations[a].framePoses[frame][i].scale.z = poses[i].channeloffset[9]; + + if (poses[i].mask & 0x200) + { + animations[a].framePoses[frame][i].scale.z += framedata[dcounter]*poses[i].channelscale[9]; + dcounter++; + } + + animations[a].framePoses[frame][i].rotation = QuaternionNormalize(animations[a].framePoses[frame][i].rotation); + } + } + + // Build frameposes + for (int frame = 0; frame < anim[a].num_frames; frame++) + { + for (int i = 0; i < animations[a].boneCount; i++) + { + if (animations[a].bones[i].parent >= 0) + { + animations[a].framePoses[frame][i].rotation = QuaternionMultiply(animations[a].framePoses[frame][animations[a].bones[i].parent].rotation, animations[a].framePoses[frame][i].rotation); + animations[a].framePoses[frame][i].translation = Vector3RotateByQuaternion(animations[a].framePoses[frame][i].translation, animations[a].framePoses[frame][animations[a].bones[i].parent].rotation); + animations[a].framePoses[frame][i].translation = Vector3Add(animations[a].framePoses[frame][i].translation, animations[a].framePoses[frame][animations[a].bones[i].parent].translation); + animations[a].framePoses[frame][i].scale = Vector3MultiplyV(animations[a].framePoses[frame][i].scale, animations[a].framePoses[frame][animations[a].bones[i].parent].scale); + } + } + } + } + + RL_FREE(framedata); + RL_FREE(poses); + RL_FREE(anim); + + fclose(iqmFile); + + return animations; +} + +// Update model animated vertex data (positions and normals) for a given frame +// NOTE: Updated data is uploaded to GPU +void UpdateModelAnimation(Model model, ModelAnimation anim, int frame) +{ + if ((anim.frameCount > 0) && (anim.bones != NULL) && (anim.framePoses != NULL)) + { + if (frame >= anim.frameCount) frame = frame%anim.frameCount; + + for (int m = 0; m < model.meshCount; m++) + { + Vector3 animVertex = { 0 }; + Vector3 animNormal = { 0 }; + + Vector3 inTranslation = { 0 }; + Quaternion inRotation = { 0 }; + Vector3 inScale = { 0 }; + + Vector3 outTranslation = { 0 }; + Quaternion outRotation = { 0 }; + Vector3 outScale = { 0 }; + + int vCounter = 0; + int boneCounter = 0; + int boneId = 0; + + for (int i = 0; i < model.meshes[m].vertexCount; i++) + { + boneId = model.meshes[m].boneIds[boneCounter]; + inTranslation = model.bindPose[boneId].translation; + inRotation = model.bindPose[boneId].rotation; + inScale = model.bindPose[boneId].scale; + outTranslation = anim.framePoses[frame][boneId].translation; + outRotation = anim.framePoses[frame][boneId].rotation; + outScale = anim.framePoses[frame][boneId].scale; + + // Vertices processing + // NOTE: We use meshes.vertices (default vertex position) to calculate meshes.animVertices (animated vertex position) + animVertex = (Vector3){ model.meshes[m].vertices[vCounter], model.meshes[m].vertices[vCounter + 1], model.meshes[m].vertices[vCounter + 2] }; + animVertex = Vector3MultiplyV(animVertex, outScale); + animVertex = Vector3Subtract(animVertex, inTranslation); + animVertex = Vector3RotateByQuaternion(animVertex, QuaternionMultiply(outRotation, QuaternionInvert(inRotation))); + animVertex = Vector3Add(animVertex, outTranslation); + model.meshes[m].animVertices[vCounter] = animVertex.x; + model.meshes[m].animVertices[vCounter + 1] = animVertex.y; + model.meshes[m].animVertices[vCounter + 2] = animVertex.z; + + // Normals processing + // NOTE: We use meshes.baseNormals (default normal) to calculate meshes.normals (animated normals) + animNormal = (Vector3){ model.meshes[m].normals[vCounter], model.meshes[m].normals[vCounter + 1], model.meshes[m].normals[vCounter + 2] }; + animNormal = Vector3RotateByQuaternion(animNormal, QuaternionMultiply(outRotation, QuaternionInvert(inRotation))); + model.meshes[m].animNormals[vCounter] = animNormal.x; + model.meshes[m].animNormals[vCounter + 1] = animNormal.y; + model.meshes[m].animNormals[vCounter + 2] = animNormal.z; + vCounter += 3; + + boneCounter += 4; + } + + // Upload new vertex data to GPU for model drawing + rlUpdateBuffer(model.meshes[m].vboId[0], model.meshes[m].animVertices, model.meshes[m].vertexCount*3*sizeof(float)); // Update vertex position + rlUpdateBuffer(model.meshes[m].vboId[2], model.meshes[m].animNormals, model.meshes[m].vertexCount*3*sizeof(float)); // Update vertex normals + } + } +} + +// Unload animation data +void UnloadModelAnimation(ModelAnimation anim) +{ + for (int i = 0; i < anim.frameCount; i++) RL_FREE(anim.framePoses[i]); + + RL_FREE(anim.bones); + RL_FREE(anim.framePoses); +} + +// Check model animation skeleton match +// NOTE: Only number of bones and parent connections are checked +bool IsModelAnimationValid(Model model, ModelAnimation anim) +{ + int result = true; + + if (model.boneCount != anim.boneCount) result = false; + else + { + for (int i = 0; i < model.boneCount; i++) + { + if (model.bones[i].parent != anim.bones[i].parent) { result = false; break; } + } + } + + return result; +} + +#if defined(SUPPORT_MESH_GENERATION) +// Generate polygonal mesh +Mesh GenMeshPoly(int sides, float radius) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + int vertexCount = sides*3; + + // Vertices definition + Vector3 *vertices = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int i = 0, v = 0; i < 360; i += 360/sides, v += 3) + { + vertices[v] = (Vector3){ 0.0f, 0.0f, 0.0f }; + vertices[v + 1] = (Vector3){ sinf(DEG2RAD*i)*radius, 0.0f, cosf(DEG2RAD*i)*radius }; + vertices[v + 2] = (Vector3){ sinf(DEG2RAD*(i + 360/sides))*radius, 0.0f, cosf(DEG2RAD*(i + 360/sides))*radius }; + } + + // Normals definition + Vector3 *normals = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int n = 0; n < vertexCount; n++) normals[n] = (Vector3){ 0.0f, 1.0f, 0.0f }; // Vector3.up; + + // TexCoords definition + Vector2 *texcoords = (Vector2 *)RL_MALLOC(vertexCount*sizeof(Vector2)); + for (int n = 0; n < vertexCount; n++) texcoords[n] = (Vector2){ 0.0f, 0.0f }; + + mesh.vertexCount = vertexCount; + mesh.triangleCount = sides; + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + + // Mesh vertices position array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.vertices[3*i] = vertices[i].x; + mesh.vertices[3*i + 1] = vertices[i].y; + mesh.vertices[3*i + 2] = vertices[i].z; + } + + // Mesh texcoords array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.texcoords[2*i] = texcoords[i].x; + mesh.texcoords[2*i + 1] = texcoords[i].y; + } + + // Mesh normals array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.normals[3*i] = normals[i].x; + mesh.normals[3*i + 1] = normals[i].y; + mesh.normals[3*i + 2] = normals[i].z; + } + + RL_FREE(vertices); + RL_FREE(normals); + RL_FREE(texcoords); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate plane mesh (with subdivisions) +Mesh GenMeshPlane(float width, float length, int resX, int resZ) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + +#define CUSTOM_MESH_GEN_PLANE +#if defined(CUSTOM_MESH_GEN_PLANE) + resX++; + resZ++; + + // Vertices definition + int vertexCount = resX*resZ; // vertices get reused for the faces + + Vector3 *vertices = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int z = 0; z < resZ; z++) + { + // [-length/2, length/2] + float zPos = ((float)z/(resZ - 1) - 0.5f)*length; + for (int x = 0; x < resX; x++) + { + // [-width/2, width/2] + float xPos = ((float)x/(resX - 1) - 0.5f)*width; + vertices[x + z*resX] = (Vector3){ xPos, 0.0f, zPos }; + } + } + + // Normals definition + Vector3 *normals = (Vector3 *)RL_MALLOC(vertexCount*sizeof(Vector3)); + for (int n = 0; n < vertexCount; n++) normals[n] = (Vector3){ 0.0f, 1.0f, 0.0f }; // Vector3.up; + + // TexCoords definition + Vector2 *texcoords = (Vector2 *)RL_MALLOC(vertexCount*sizeof(Vector2)); + for (int v = 0; v < resZ; v++) + { + for (int u = 0; u < resX; u++) + { + texcoords[u + v*resX] = (Vector2){ (float)u/(resX - 1), (float)v/(resZ - 1) }; + } + } + + // Triangles definition (indices) + int numFaces = (resX - 1)*(resZ - 1); + int *triangles = (int *)RL_MALLOC(numFaces*6*sizeof(int)); + int t = 0; + for (int face = 0; face < numFaces; face++) + { + // Retrieve lower left corner from face ind + int i = face % (resX - 1) + (face/(resZ - 1)*resX); + + triangles[t++] = i + resX; + triangles[t++] = i + 1; + triangles[t++] = i; + + triangles[t++] = i + resX; + triangles[t++] = i + resX + 1; + triangles[t++] = i + 1; + } + + mesh.vertexCount = vertexCount; + mesh.triangleCount = numFaces*2; + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.indices = (unsigned short *)RL_MALLOC(mesh.triangleCount*3*sizeof(unsigned short)); + + // Mesh vertices position array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.vertices[3*i] = vertices[i].x; + mesh.vertices[3*i + 1] = vertices[i].y; + mesh.vertices[3*i + 2] = vertices[i].z; + } + + // Mesh texcoords array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.texcoords[2*i] = texcoords[i].x; + mesh.texcoords[2*i + 1] = texcoords[i].y; + } + + // Mesh normals array + for (int i = 0; i < mesh.vertexCount; i++) + { + mesh.normals[3*i] = normals[i].x; + mesh.normals[3*i + 1] = normals[i].y; + mesh.normals[3*i + 2] = normals[i].z; + } + + // Mesh indices array initialization + for (int i = 0; i < mesh.triangleCount*3; i++) mesh.indices[i] = triangles[i]; + + RL_FREE(vertices); + RL_FREE(normals); + RL_FREE(texcoords); + RL_FREE(triangles); + +#else // Use par_shapes library to generate plane mesh + + par_shapes_mesh *plane = par_shapes_create_plane(resX, resZ); // No normals/texcoords generated!!! + par_shapes_scale(plane, width, length, 1.0f); + par_shapes_rotate(plane, -PI/2.0f, (float[]){ 1, 0, 0 }); + par_shapes_translate(plane, -width/2, 0.0f, length/2); + + mesh.vertices = (float *)RL_MALLOC(plane->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(plane->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(plane->ntriangles*3*3*sizeof(float)); + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + mesh.vertexCount = plane->ntriangles*3; + mesh.triangleCount = plane->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = plane->points[plane->triangles[k]*3]; + mesh.vertices[k*3 + 1] = plane->points[plane->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = plane->points[plane->triangles[k]*3 + 2]; + + mesh.normals[k*3] = plane->normals[plane->triangles[k]*3]; + mesh.normals[k*3 + 1] = plane->normals[plane->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = plane->normals[plane->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = plane->tcoords[plane->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = plane->tcoords[plane->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(plane); +#endif + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generated cuboid mesh +Mesh GenMeshCube(float width, float height, float length) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + +#define CUSTOM_MESH_GEN_CUBE +#if defined(CUSTOM_MESH_GEN_CUBE) + float vertices[] = { + -width/2, -height/2, length/2, + width/2, -height/2, length/2, + width/2, height/2, length/2, + -width/2, height/2, length/2, + -width/2, -height/2, -length/2, + -width/2, height/2, -length/2, + width/2, height/2, -length/2, + width/2, -height/2, -length/2, + -width/2, height/2, -length/2, + -width/2, height/2, length/2, + width/2, height/2, length/2, + width/2, height/2, -length/2, + -width/2, -height/2, -length/2, + width/2, -height/2, -length/2, + width/2, -height/2, length/2, + -width/2, -height/2, length/2, + width/2, -height/2, -length/2, + width/2, height/2, -length/2, + width/2, height/2, length/2, + width/2, -height/2, length/2, + -width/2, -height/2, -length/2, + -width/2, -height/2, length/2, + -width/2, height/2, length/2, + -width/2, height/2, -length/2 + }; + + float texcoords[] = { + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f, + 0.0f, 0.0f, + 0.0f, 0.0f, + 1.0f, 0.0f, + 1.0f, 1.0f, + 0.0f, 1.0f + }; + + float normals[] = { + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f, 1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 0.0f,-1.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f, 1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 0.0f,-1.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + 1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f, + -1.0f, 0.0f, 0.0f + }; + + mesh.vertices = (float *)RL_MALLOC(24*3*sizeof(float)); + memcpy(mesh.vertices, vertices, 24*3*sizeof(float)); + + mesh.texcoords = (float *)RL_MALLOC(24*2*sizeof(float)); + memcpy(mesh.texcoords, texcoords, 24*2*sizeof(float)); + + mesh.normals = (float *)RL_MALLOC(24*3*sizeof(float)); + memcpy(mesh.normals, normals, 24*3*sizeof(float)); + + mesh.indices = (unsigned short *)RL_MALLOC(36*sizeof(unsigned short)); + + int k = 0; + + // Indices can be initialized right now + for (int i = 0; i < 36; i+=6) + { + mesh.indices[i] = 4*k; + mesh.indices[i+1] = 4*k+1; + mesh.indices[i+2] = 4*k+2; + mesh.indices[i+3] = 4*k; + mesh.indices[i+4] = 4*k+2; + mesh.indices[i+5] = 4*k+3; + + k++; + } + + mesh.vertexCount = 24; + mesh.triangleCount = 12; + +#else // Use par_shapes library to generate cube mesh +/* +// Platonic solids: +par_shapes_mesh* par_shapes_create_tetrahedron(); // 4 sides polyhedron (pyramid) +par_shapes_mesh* par_shapes_create_cube(); // 6 sides polyhedron (cube) +par_shapes_mesh* par_shapes_create_octahedron(); // 8 sides polyhedron (dyamond) +par_shapes_mesh* par_shapes_create_dodecahedron(); // 12 sides polyhedron +par_shapes_mesh* par_shapes_create_icosahedron(); // 20 sides polyhedron +*/ + // Platonic solid generation: cube (6 sides) + // NOTE: No normals/texcoords generated by default + par_shapes_mesh *cube = par_shapes_create_cube(); + cube->tcoords = PAR_MALLOC(float, 2*cube->npoints); + for (int i = 0; i < 2*cube->npoints; i++) cube->tcoords[i] = 0.0f; + par_shapes_scale(cube, width, height, length); + par_shapes_translate(cube, -width/2, 0.0f, -length/2); + par_shapes_compute_normals(cube); + + mesh.vertices = (float *)RL_MALLOC(cube->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(cube->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(cube->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = cube->ntriangles*3; + mesh.triangleCount = cube->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = cube->points[cube->triangles[k]*3]; + mesh.vertices[k*3 + 1] = cube->points[cube->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = cube->points[cube->triangles[k]*3 + 2]; + + mesh.normals[k*3] = cube->normals[cube->triangles[k]*3]; + mesh.normals[k*3 + 1] = cube->normals[cube->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = cube->normals[cube->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = cube->tcoords[cube->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = cube->tcoords[cube->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(cube); +#endif + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate sphere mesh (standard sphere) +RLAPI Mesh GenMeshSphere(float radius, int rings, int slices) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + par_shapes_mesh *sphere = par_shapes_create_parametric_sphere(slices, rings); + par_shapes_scale(sphere, radius, radius, radius); + // NOTE: Soft normals are computed internally + + mesh.vertices = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(sphere->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = sphere->ntriangles*3; + mesh.triangleCount = sphere->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = sphere->points[sphere->triangles[k]*3]; + mesh.vertices[k*3 + 1] = sphere->points[sphere->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = sphere->points[sphere->triangles[k]*3 + 2]; + + mesh.normals[k*3] = sphere->normals[sphere->triangles[k]*3]; + mesh.normals[k*3 + 1] = sphere->normals[sphere->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = sphere->normals[sphere->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = sphere->tcoords[sphere->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = sphere->tcoords[sphere->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(sphere); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate hemi-sphere mesh (half sphere, no bottom cap) +RLAPI Mesh GenMeshHemiSphere(float radius, int rings, int slices) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + par_shapes_mesh *sphere = par_shapes_create_hemisphere(slices, rings); + par_shapes_scale(sphere, radius, radius, radius); + // NOTE: Soft normals are computed internally + + mesh.vertices = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(sphere->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(sphere->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = sphere->ntriangles*3; + mesh.triangleCount = sphere->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = sphere->points[sphere->triangles[k]*3]; + mesh.vertices[k*3 + 1] = sphere->points[sphere->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = sphere->points[sphere->triangles[k]*3 + 2]; + + mesh.normals[k*3] = sphere->normals[sphere->triangles[k]*3]; + mesh.normals[k*3 + 1] = sphere->normals[sphere->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = sphere->normals[sphere->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = sphere->tcoords[sphere->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = sphere->tcoords[sphere->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(sphere); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate cylinder mesh +Mesh GenMeshCylinder(float radius, float height, int slices) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + // Instance a cylinder that sits on the Z=0 plane using the given tessellation + // levels across the UV domain. Think of "slices" like a number of pizza + // slices, and "stacks" like a number of stacked rings. + // Height and radius are both 1.0, but they can easily be changed with par_shapes_scale + par_shapes_mesh *cylinder = par_shapes_create_cylinder(slices, 8); + par_shapes_scale(cylinder, radius, radius, height); + par_shapes_rotate(cylinder, -PI/2.0f, (float[]){ 1, 0, 0 }); + + // Generate an orientable disk shape (top cap) + par_shapes_mesh *capTop = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, 1 }); + capTop->tcoords = PAR_MALLOC(float, 2*capTop->npoints); + for (int i = 0; i < 2*capTop->npoints; i++) capTop->tcoords[i] = 0.0f; + par_shapes_rotate(capTop, -PI/2.0f, (float[]){ 1, 0, 0 }); + par_shapes_translate(capTop, 0, height, 0); + + // Generate an orientable disk shape (bottom cap) + par_shapes_mesh *capBottom = par_shapes_create_disk(radius, slices, (float[]){ 0, 0, 0 }, (float[]){ 0, 0, -1 }); + capBottom->tcoords = PAR_MALLOC(float, 2*capBottom->npoints); + for (int i = 0; i < 2*capBottom->npoints; i++) capBottom->tcoords[i] = 0.95f; + par_shapes_rotate(capBottom, PI/2.0f, (float[]){ 1, 0, 0 }); + + par_shapes_merge_and_free(cylinder, capTop); + par_shapes_merge_and_free(cylinder, capBottom); + + mesh.vertices = (float *)RL_MALLOC(cylinder->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(cylinder->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(cylinder->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = cylinder->ntriangles*3; + mesh.triangleCount = cylinder->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = cylinder->points[cylinder->triangles[k]*3]; + mesh.vertices[k*3 + 1] = cylinder->points[cylinder->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = cylinder->points[cylinder->triangles[k]*3 + 2]; + + mesh.normals[k*3] = cylinder->normals[cylinder->triangles[k]*3]; + mesh.normals[k*3 + 1] = cylinder->normals[cylinder->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = cylinder->normals[cylinder->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = cylinder->tcoords[cylinder->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = cylinder->tcoords[cylinder->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(cylinder); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate torus mesh +Mesh GenMeshTorus(float radius, float size, int radSeg, int sides) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + if (radius > 1.0f) radius = 1.0f; + else if (radius < 0.1f) radius = 0.1f; + + // Create a donut that sits on the Z=0 plane with the specified inner radius + // The outer radius can be controlled with par_shapes_scale + par_shapes_mesh *torus = par_shapes_create_torus(radSeg, sides, radius); + par_shapes_scale(torus, size/2, size/2, size/2); + + mesh.vertices = (float *)RL_MALLOC(torus->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(torus->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(torus->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = torus->ntriangles*3; + mesh.triangleCount = torus->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = torus->points[torus->triangles[k]*3]; + mesh.vertices[k*3 + 1] = torus->points[torus->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = torus->points[torus->triangles[k]*3 + 2]; + + mesh.normals[k*3] = torus->normals[torus->triangles[k]*3]; + mesh.normals[k*3 + 1] = torus->normals[torus->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = torus->normals[torus->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = torus->tcoords[torus->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = torus->tcoords[torus->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(torus); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate trefoil knot mesh +Mesh GenMeshKnot(float radius, float size, int radSeg, int sides) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + if (radius > 3.0f) radius = 3.0f; + else if (radius < 0.5f) radius = 0.5f; + + par_shapes_mesh *knot = par_shapes_create_trefoil_knot(radSeg, sides, radius); + par_shapes_scale(knot, size, size, size); + + mesh.vertices = (float *)RL_MALLOC(knot->ntriangles*3*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(knot->ntriangles*3*2*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(knot->ntriangles*3*3*sizeof(float)); + + mesh.vertexCount = knot->ntriangles*3; + mesh.triangleCount = knot->ntriangles; + + for (int k = 0; k < mesh.vertexCount; k++) + { + mesh.vertices[k*3] = knot->points[knot->triangles[k]*3]; + mesh.vertices[k*3 + 1] = knot->points[knot->triangles[k]*3 + 1]; + mesh.vertices[k*3 + 2] = knot->points[knot->triangles[k]*3 + 2]; + + mesh.normals[k*3] = knot->normals[knot->triangles[k]*3]; + mesh.normals[k*3 + 1] = knot->normals[knot->triangles[k]*3 + 1]; + mesh.normals[k*3 + 2] = knot->normals[knot->triangles[k]*3 + 2]; + + mesh.texcoords[k*2] = knot->tcoords[knot->triangles[k]*2]; + mesh.texcoords[k*2 + 1] = knot->tcoords[knot->triangles[k]*2 + 1]; + } + + par_shapes_free_mesh(knot); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate a mesh from heightmap +// NOTE: Vertex data is uploaded to GPU +Mesh GenMeshHeightmap(Image heightmap, Vector3 size) +{ + #define GRAY_VALUE(c) ((c.r+c.g+c.b)/3) + + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + int mapX = heightmap.width; + int mapZ = heightmap.height; + + Color *pixels = GetImageData(heightmap); + + // NOTE: One vertex per pixel + mesh.triangleCount = (mapX-1)*(mapZ-1)*2; // One quad every four pixels + + mesh.vertexCount = mesh.triangleCount*3; + + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.colors = NULL; + + int vCounter = 0; // Used to count vertices float by float + int tcCounter = 0; // Used to count texcoords float by float + int nCounter = 0; // Used to count normals float by float + + int trisCounter = 0; + + Vector3 scaleFactor = { size.x/mapX, size.y/255.0f, size.z/mapZ }; + + for (int z = 0; z < mapZ-1; z++) + { + for (int x = 0; x < mapX-1; x++) + { + // Fill vertices array with data + //---------------------------------------------------------- + + // one triangle - 3 vertex + mesh.vertices[vCounter] = (float)x*scaleFactor.x; + mesh.vertices[vCounter + 1] = (float)GRAY_VALUE(pixels[x + z*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 2] = (float)z*scaleFactor.z; + + mesh.vertices[vCounter + 3] = (float)x*scaleFactor.x; + mesh.vertices[vCounter + 4] = (float)GRAY_VALUE(pixels[x + (z + 1)*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 5] = (float)(z + 1)*scaleFactor.z; + + mesh.vertices[vCounter + 6] = (float)(x + 1)*scaleFactor.x; + mesh.vertices[vCounter + 7] = (float)GRAY_VALUE(pixels[(x + 1) + z*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 8] = (float)z*scaleFactor.z; + + // another triangle - 3 vertex + mesh.vertices[vCounter + 9] = mesh.vertices[vCounter + 6]; + mesh.vertices[vCounter + 10] = mesh.vertices[vCounter + 7]; + mesh.vertices[vCounter + 11] = mesh.vertices[vCounter + 8]; + + mesh.vertices[vCounter + 12] = mesh.vertices[vCounter + 3]; + mesh.vertices[vCounter + 13] = mesh.vertices[vCounter + 4]; + mesh.vertices[vCounter + 14] = mesh.vertices[vCounter + 5]; + + mesh.vertices[vCounter + 15] = (float)(x + 1)*scaleFactor.x; + mesh.vertices[vCounter + 16] = (float)GRAY_VALUE(pixels[(x + 1) + (z + 1)*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 17] = (float)(z + 1)*scaleFactor.z; + vCounter += 18; // 6 vertex, 18 floats + + // Fill texcoords array with data + //-------------------------------------------------------------- + mesh.texcoords[tcCounter] = (float)x/(mapX - 1); + mesh.texcoords[tcCounter + 1] = (float)z/(mapZ - 1); + + mesh.texcoords[tcCounter + 2] = (float)x/(mapX - 1); + mesh.texcoords[tcCounter + 3] = (float)(z + 1)/(mapZ - 1); + + mesh.texcoords[tcCounter + 4] = (float)(x + 1)/(mapX - 1); + mesh.texcoords[tcCounter + 5] = (float)z/(mapZ - 1); + + mesh.texcoords[tcCounter + 6] = mesh.texcoords[tcCounter + 4]; + mesh.texcoords[tcCounter + 7] = mesh.texcoords[tcCounter + 5]; + + mesh.texcoords[tcCounter + 8] = mesh.texcoords[tcCounter + 2]; + mesh.texcoords[tcCounter + 9] = mesh.texcoords[tcCounter + 3]; + + mesh.texcoords[tcCounter + 10] = (float)(x + 1)/(mapX - 1); + mesh.texcoords[tcCounter + 11] = (float)(z + 1)/(mapZ - 1); + tcCounter += 12; // 6 texcoords, 12 floats + + // Fill normals array with data + //-------------------------------------------------------------- + for (int i = 0; i < 18; i += 3) + { + mesh.normals[nCounter + i] = 0.0f; + mesh.normals[nCounter + i + 1] = 1.0f; + mesh.normals[nCounter + i + 2] = 0.0f; + } + + // TODO: Calculate normals in an efficient way + + nCounter += 18; // 6 vertex, 18 floats + trisCounter += 2; + } + } + + RL_FREE(pixels); + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} + +// Generate a cubes mesh from pixel data +// NOTE: Vertex data is uploaded to GPU +Mesh GenMeshCubicmap(Image cubicmap, Vector3 cubeSize) +{ + Mesh mesh = { 0 }; + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + Color *cubicmapPixels = GetImageData(cubicmap); + + int mapWidth = cubicmap.width; + int mapHeight = cubicmap.height; + + // NOTE: Max possible number of triangles numCubes*(12 triangles by cube) + int maxTriangles = cubicmap.width*cubicmap.height*12; + + int vCounter = 0; // Used to count vertices + int tcCounter = 0; // Used to count texcoords + int nCounter = 0; // Used to count normals + + float w = cubeSize.x; + float h = cubeSize.z; + float h2 = cubeSize.y; + + Vector3 *mapVertices = (Vector3 *)RL_MALLOC(maxTriangles*3*sizeof(Vector3)); + Vector2 *mapTexcoords = (Vector2 *)RL_MALLOC(maxTriangles*3*sizeof(Vector2)); + Vector3 *mapNormals = (Vector3 *)RL_MALLOC(maxTriangles*3*sizeof(Vector3)); + + // Define the 6 normals of the cube, we will combine them accordingly later... + Vector3 n1 = { 1.0f, 0.0f, 0.0f }; + Vector3 n2 = { -1.0f, 0.0f, 0.0f }; + Vector3 n3 = { 0.0f, 1.0f, 0.0f }; + Vector3 n4 = { 0.0f, -1.0f, 0.0f }; + Vector3 n5 = { 0.0f, 0.0f, 1.0f }; + Vector3 n6 = { 0.0f, 0.0f, -1.0f }; + + // NOTE: We use texture rectangles to define different textures for top-bottom-front-back-right-left (6) + typedef struct RectangleF { + float x; + float y; + float width; + float height; + } RectangleF; + + RectangleF rightTexUV = { 0.0f, 0.0f, 0.5f, 0.5f }; + RectangleF leftTexUV = { 0.5f, 0.0f, 0.5f, 0.5f }; + RectangleF frontTexUV = { 0.0f, 0.0f, 0.5f, 0.5f }; + RectangleF backTexUV = { 0.5f, 0.0f, 0.5f, 0.5f }; + RectangleF topTexUV = { 0.0f, 0.5f, 0.5f, 0.5f }; + RectangleF bottomTexUV = { 0.5f, 0.5f, 0.5f, 0.5f }; + + for (int z = 0; z < mapHeight; ++z) + { + for (int x = 0; x < mapWidth; ++x) + { + // Define the 8 vertex of the cube, we will combine them accordingly later... + Vector3 v1 = { w*(x - 0.5f), h2, h*(z - 0.5f) }; + Vector3 v2 = { w*(x - 0.5f), h2, h*(z + 0.5f) }; + Vector3 v3 = { w*(x + 0.5f), h2, h*(z + 0.5f) }; + Vector3 v4 = { w*(x + 0.5f), h2, h*(z - 0.5f) }; + Vector3 v5 = { w*(x + 0.5f), 0, h*(z - 0.5f) }; + Vector3 v6 = { w*(x - 0.5f), 0, h*(z - 0.5f) }; + Vector3 v7 = { w*(x - 0.5f), 0, h*(z + 0.5f) }; + Vector3 v8 = { w*(x + 0.5f), 0, h*(z + 0.5f) }; + + // We check pixel color to be WHITE, we will full cubes + if ((cubicmapPixels[z*cubicmap.width + x].r == 255) && + (cubicmapPixels[z*cubicmap.width + x].g == 255) && + (cubicmapPixels[z*cubicmap.width + x].b == 255)) + { + // Define triangles (Checking Collateral Cubes!) + //---------------------------------------------- + + // Define top triangles (2 tris, 6 vertex --> v1-v2-v3, v1-v3-v4) + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v2; + mapVertices[vCounter + 2] = v3; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v3; + mapVertices[vCounter + 5] = v4; + vCounter += 6; + + mapNormals[nCounter] = n3; + mapNormals[nCounter + 1] = n3; + mapNormals[nCounter + 2] = n3; + mapNormals[nCounter + 3] = n3; + mapNormals[nCounter + 4] = n3; + mapNormals[nCounter + 5] = n3; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ topTexUV.x, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y }; + tcCounter += 6; + + // Define bottom triangles (2 tris, 6 vertex --> v6-v8-v7, v6-v5-v8) + mapVertices[vCounter] = v6; + mapVertices[vCounter + 1] = v8; + mapVertices[vCounter + 2] = v7; + mapVertices[vCounter + 3] = v6; + mapVertices[vCounter + 4] = v5; + mapVertices[vCounter + 5] = v8; + vCounter += 6; + + mapNormals[nCounter] = n4; + mapNormals[nCounter + 1] = n4; + mapNormals[nCounter + 2] = n4; + mapNormals[nCounter + 3] = n4; + mapNormals[nCounter + 4] = n4; + mapNormals[nCounter + 5] = n4; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ bottomTexUV.x, bottomTexUV.y }; + mapTexcoords[tcCounter + 5] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + tcCounter += 6; + + if (((z < cubicmap.height - 1) && + (cubicmapPixels[(z + 1)*cubicmap.width + x].r == 0) && + (cubicmapPixels[(z + 1)*cubicmap.width + x].g == 0) && + (cubicmapPixels[(z + 1)*cubicmap.width + x].b == 0)) || (z == cubicmap.height - 1)) + { + // Define front triangles (2 tris, 6 vertex) --> v2 v7 v3, v3 v7 v8 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v2; + mapVertices[vCounter + 1] = v7; + mapVertices[vCounter + 2] = v3; + mapVertices[vCounter + 3] = v3; + mapVertices[vCounter + 4] = v7; + mapVertices[vCounter + 5] = v8; + vCounter += 6; + + mapNormals[nCounter] = n6; + mapNormals[nCounter + 1] = n6; + mapNormals[nCounter + 2] = n6; + mapNormals[nCounter + 3] = n6; + mapNormals[nCounter + 4] = n6; + mapNormals[nCounter + 5] = n6; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ frontTexUV.x, frontTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ frontTexUV.x, frontTexUV.y + frontTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y }; + mapTexcoords[tcCounter + 3] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ frontTexUV.x, frontTexUV.y + frontTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ frontTexUV.x + frontTexUV.width, frontTexUV.y + frontTexUV.height }; + tcCounter += 6; + } + + if (((z > 0) && + (cubicmapPixels[(z - 1)*cubicmap.width + x].r == 0) && + (cubicmapPixels[(z - 1)*cubicmap.width + x].g == 0) && + (cubicmapPixels[(z - 1)*cubicmap.width + x].b == 0)) || (z == 0)) + { + // Define back triangles (2 tris, 6 vertex) --> v1 v5 v6, v1 v4 v5 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v5; + mapVertices[vCounter + 2] = v6; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v4; + mapVertices[vCounter + 5] = v5; + vCounter += 6; + + mapNormals[nCounter] = n5; + mapNormals[nCounter + 1] = n5; + mapNormals[nCounter + 2] = n5; + mapNormals[nCounter + 3] = n5; + mapNormals[nCounter + 4] = n5; + mapNormals[nCounter + 5] = n5; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ backTexUV.x, backTexUV.y + backTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y + backTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ backTexUV.x + backTexUV.width, backTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ backTexUV.x, backTexUV.y }; + mapTexcoords[tcCounter + 5] = (Vector2){ backTexUV.x, backTexUV.y + backTexUV.height }; + tcCounter += 6; + } + + if (((x < cubicmap.width - 1) && + (cubicmapPixels[z*cubicmap.width + (x + 1)].r == 0) && + (cubicmapPixels[z*cubicmap.width + (x + 1)].g == 0) && + (cubicmapPixels[z*cubicmap.width + (x + 1)].b == 0)) || (x == cubicmap.width - 1)) + { + // Define right triangles (2 tris, 6 vertex) --> v3 v8 v4, v4 v8 v5 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v3; + mapVertices[vCounter + 1] = v8; + mapVertices[vCounter + 2] = v4; + mapVertices[vCounter + 3] = v4; + mapVertices[vCounter + 4] = v8; + mapVertices[vCounter + 5] = v5; + vCounter += 6; + + mapNormals[nCounter] = n1; + mapNormals[nCounter + 1] = n1; + mapNormals[nCounter + 2] = n1; + mapNormals[nCounter + 3] = n1; + mapNormals[nCounter + 4] = n1; + mapNormals[nCounter + 5] = n1; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ rightTexUV.x, rightTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ rightTexUV.x, rightTexUV.y + rightTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y }; + mapTexcoords[tcCounter + 3] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ rightTexUV.x, rightTexUV.y + rightTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ rightTexUV.x + rightTexUV.width, rightTexUV.y + rightTexUV.height }; + tcCounter += 6; + } + + if (((x > 0) && + (cubicmapPixels[z*cubicmap.width + (x - 1)].r == 0) && + (cubicmapPixels[z*cubicmap.width + (x - 1)].g == 0) && + (cubicmapPixels[z*cubicmap.width + (x - 1)].b == 0)) || (x == 0)) + { + // Define left triangles (2 tris, 6 vertex) --> v1 v7 v2, v1 v6 v7 + // NOTE: Collateral occluded faces are not generated + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v7; + mapVertices[vCounter + 2] = v2; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v6; + mapVertices[vCounter + 5] = v7; + vCounter += 6; + + mapNormals[nCounter] = n2; + mapNormals[nCounter + 1] = n2; + mapNormals[nCounter + 2] = n2; + mapNormals[nCounter + 3] = n2; + mapNormals[nCounter + 4] = n2; + mapNormals[nCounter + 5] = n2; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ leftTexUV.x, leftTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y + leftTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y }; + mapTexcoords[tcCounter + 3] = (Vector2){ leftTexUV.x, leftTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ leftTexUV.x, leftTexUV.y + leftTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ leftTexUV.x + leftTexUV.width, leftTexUV.y + leftTexUV.height }; + tcCounter += 6; + } + } + // We check pixel color to be BLACK, we will only draw floor and roof + else if ((cubicmapPixels[z*cubicmap.width + x].r == 0) && + (cubicmapPixels[z*cubicmap.width + x].g == 0) && + (cubicmapPixels[z*cubicmap.width + x].b == 0)) + { + // Define top triangles (2 tris, 6 vertex --> v1-v2-v3, v1-v3-v4) + mapVertices[vCounter] = v1; + mapVertices[vCounter + 1] = v3; + mapVertices[vCounter + 2] = v2; + mapVertices[vCounter + 3] = v1; + mapVertices[vCounter + 4] = v4; + mapVertices[vCounter + 5] = v3; + vCounter += 6; + + mapNormals[nCounter] = n4; + mapNormals[nCounter + 1] = n4; + mapNormals[nCounter + 2] = n4; + mapNormals[nCounter + 3] = n4; + mapNormals[nCounter + 4] = n4; + mapNormals[nCounter + 5] = n4; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ topTexUV.x, topTexUV.y + topTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ topTexUV.x, topTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y }; + mapTexcoords[tcCounter + 5] = (Vector2){ topTexUV.x + topTexUV.width, topTexUV.y + topTexUV.height }; + tcCounter += 6; + + // Define bottom triangles (2 tris, 6 vertex --> v6-v8-v7, v6-v5-v8) + mapVertices[vCounter] = v6; + mapVertices[vCounter + 1] = v7; + mapVertices[vCounter + 2] = v8; + mapVertices[vCounter + 3] = v6; + mapVertices[vCounter + 4] = v8; + mapVertices[vCounter + 5] = v5; + vCounter += 6; + + mapNormals[nCounter] = n3; + mapNormals[nCounter + 1] = n3; + mapNormals[nCounter + 2] = n3; + mapNormals[nCounter + 3] = n3; + mapNormals[nCounter + 4] = n3; + mapNormals[nCounter + 5] = n3; + nCounter += 6; + + mapTexcoords[tcCounter] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 1] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 2] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 3] = (Vector2){ bottomTexUV.x + bottomTexUV.width, bottomTexUV.y }; + mapTexcoords[tcCounter + 4] = (Vector2){ bottomTexUV.x, bottomTexUV.y + bottomTexUV.height }; + mapTexcoords[tcCounter + 5] = (Vector2){ bottomTexUV.x, bottomTexUV.y }; + tcCounter += 6; + } + } + } + + // Move data from mapVertices temp arays to vertices float array + mesh.vertexCount = vCounter; + mesh.triangleCount = vCounter/3; + + mesh.vertices = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.normals = (float *)RL_MALLOC(mesh.vertexCount*3*sizeof(float)); + mesh.texcoords = (float *)RL_MALLOC(mesh.vertexCount*2*sizeof(float)); + mesh.colors = NULL; + + int fCounter = 0; + + // Move vertices data + for (int i = 0; i < vCounter; i++) + { + mesh.vertices[fCounter] = mapVertices[i].x; + mesh.vertices[fCounter + 1] = mapVertices[i].y; + mesh.vertices[fCounter + 2] = mapVertices[i].z; + fCounter += 3; + } + + fCounter = 0; + + // Move normals data + for (int i = 0; i < nCounter; i++) + { + mesh.normals[fCounter] = mapNormals[i].x; + mesh.normals[fCounter + 1] = mapNormals[i].y; + mesh.normals[fCounter + 2] = mapNormals[i].z; + fCounter += 3; + } + + fCounter = 0; + + // Move texcoords data + for (int i = 0; i < tcCounter; i++) + { + mesh.texcoords[fCounter] = mapTexcoords[i].x; + mesh.texcoords[fCounter + 1] = mapTexcoords[i].y; + fCounter += 2; + } + + RL_FREE(mapVertices); + RL_FREE(mapNormals); + RL_FREE(mapTexcoords); + + RL_FREE(cubicmapPixels); // Free image pixel data + + // Upload vertex data to GPU (static mesh) + rlLoadMesh(&mesh, false); + + return mesh; +} +#endif // SUPPORT_MESH_GENERATION + +// Compute mesh bounding box limits +// NOTE: minVertex and maxVertex should be transformed by model transform matrix +BoundingBox MeshBoundingBox(Mesh mesh) +{ + // Get min and max vertex to construct bounds (AABB) + Vector3 minVertex = { 0 }; + Vector3 maxVertex = { 0 }; + + if (mesh.vertices != NULL) + { + minVertex = (Vector3){ mesh.vertices[0], mesh.vertices[1], mesh.vertices[2] }; + maxVertex = (Vector3){ mesh.vertices[0], mesh.vertices[1], mesh.vertices[2] }; + + for (int i = 1; i < mesh.vertexCount; i++) + { + minVertex = Vector3Min(minVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] }); + maxVertex = Vector3Max(maxVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] }); + } + } + + // Create the bounding box + BoundingBox box = { 0 }; + box.min = minVertex; + box.max = maxVertex; + + return box; +} + +// Compute mesh tangents +// NOTE: To calculate mesh tangents and binormals we need mesh vertex positions and texture coordinates +// Implementation base don: https://answers.unity.com/questions/7789/calculating-tangents-vector4.html +void MeshTangents(Mesh *mesh) +{ + if (mesh->tangents == NULL) mesh->tangents = (float *)RL_MALLOC(mesh->vertexCount*4*sizeof(float)); + else TraceLog(LOG_WARNING, "Mesh tangents already exist"); + + Vector3 *tan1 = (Vector3 *)RL_MALLOC(mesh->vertexCount*sizeof(Vector3)); + Vector3 *tan2 = (Vector3 *)RL_MALLOC(mesh->vertexCount*sizeof(Vector3)); + + for (int i = 0; i < mesh->vertexCount; i += 3) + { + // Get triangle vertices + Vector3 v1 = { mesh->vertices[(i + 0)*3 + 0], mesh->vertices[(i + 0)*3 + 1], mesh->vertices[(i + 0)*3 + 2] }; + Vector3 v2 = { mesh->vertices[(i + 1)*3 + 0], mesh->vertices[(i + 1)*3 + 1], mesh->vertices[(i + 1)*3 + 2] }; + Vector3 v3 = { mesh->vertices[(i + 2)*3 + 0], mesh->vertices[(i + 2)*3 + 1], mesh->vertices[(i + 2)*3 + 2] }; + + // Get triangle texcoords + Vector2 uv1 = { mesh->texcoords[(i + 0)*2 + 0], mesh->texcoords[(i + 0)*2 + 1] }; + Vector2 uv2 = { mesh->texcoords[(i + 1)*2 + 0], mesh->texcoords[(i + 1)*2 + 1] }; + Vector2 uv3 = { mesh->texcoords[(i + 2)*2 + 0], mesh->texcoords[(i + 2)*2 + 1] }; + + float x1 = v2.x - v1.x; + float y1 = v2.y - v1.y; + float z1 = v2.z - v1.z; + float x2 = v3.x - v1.x; + float y2 = v3.y - v1.y; + float z2 = v3.z - v1.z; + + float s1 = uv2.x - uv1.x; + float t1 = uv2.y - uv1.y; + float s2 = uv3.x - uv1.x; + float t2 = uv3.y - uv1.y; + + float div = s1*t2 - s2*t1; + float r = (div == 0.0f)? 0.0f : 1.0f/div; + + Vector3 sdir = { (t2*x1 - t1*x2)*r, (t2*y1 - t1*y2)*r, (t2*z1 - t1*z2)*r }; + Vector3 tdir = { (s1*x2 - s2*x1)*r, (s1*y2 - s2*y1)*r, (s1*z2 - s2*z1)*r }; + + tan1[i + 0] = sdir; + tan1[i + 1] = sdir; + tan1[i + 2] = sdir; + + tan2[i + 0] = tdir; + tan2[i + 1] = tdir; + tan2[i + 2] = tdir; + } + + // Compute tangents considering normals + for (int i = 0; i < mesh->vertexCount; ++i) + { + Vector3 normal = { mesh->normals[i*3 + 0], mesh->normals[i*3 + 1], mesh->normals[i*3 + 2] }; + Vector3 tangent = tan1[i]; + + // TODO: Review, not sure if tangent computation is right, just used reference proposed maths... + #if defined(COMPUTE_TANGENTS_METHOD_01) + Vector3 tmp = Vector3Subtract(tangent, Vector3Multiply(normal, Vector3DotProduct(normal, tangent))); + tmp = Vector3Normalize(tmp); + mesh->tangents[i*4 + 0] = tmp.x; + mesh->tangents[i*4 + 1] = tmp.y; + mesh->tangents[i*4 + 2] = tmp.z; + mesh->tangents[i*4 + 3] = 1.0f; + #else + Vector3OrthoNormalize(&normal, &tangent); + mesh->tangents[i*4 + 0] = tangent.x; + mesh->tangents[i*4 + 1] = tangent.y; + mesh->tangents[i*4 + 2] = tangent.z; + mesh->tangents[i*4 + 3] = (Vector3DotProduct(Vector3CrossProduct(normal, tangent), tan2[i]) < 0.0f)? -1.0f : 1.0f; + #endif + } + + RL_FREE(tan1); + RL_FREE(tan2); + + // Load a new tangent attributes buffer + mesh->vboId[LOC_VERTEX_TANGENT] = rlLoadAttribBuffer(mesh->vaoId, LOC_VERTEX_TANGENT, mesh->tangents, mesh->vertexCount*4*sizeof(float), false); + + TraceLog(LOG_INFO, "Tangents computed for mesh"); +} + +// Compute mesh binormals (aka bitangent) +void MeshBinormals(Mesh *mesh) +{ + for (int i = 0; i < mesh->vertexCount; i++) + { + Vector3 normal = { mesh->normals[i*3 + 0], mesh->normals[i*3 + 1], mesh->normals[i*3 + 2] }; + Vector3 tangent = { mesh->tangents[i*4 + 0], mesh->tangents[i*4 + 1], mesh->tangents[i*4 + 2] }; + Vector3 binormal = Vector3Multiply(Vector3CrossProduct(normal, tangent), mesh->tangents[i*4 + 3]); + + // TODO: Register computed binormal in mesh->binormal? + } +} + +// Draw a model (with texture if set) +void DrawModel(Model model, Vector3 position, float scale, Color tint) +{ + Vector3 vScale = { scale, scale, scale }; + Vector3 rotationAxis = { 0.0f, 1.0f, 0.0f }; + + DrawModelEx(model, position, rotationAxis, 0.0f, vScale, tint); +} + +// Draw a model with extended parameters +void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) +{ + // Calculate transformation matrix from function parameters + // Get transform matrix (rotation -> scale -> translation) + Matrix matScale = MatrixScale(scale.x, scale.y, scale.z); + Matrix matRotation = MatrixRotate(rotationAxis, rotationAngle*DEG2RAD); + Matrix matTranslation = MatrixTranslate(position.x, position.y, position.z); + + Matrix matTransform = MatrixMultiply(MatrixMultiply(matScale, matRotation), matTranslation); + + // Combine model transformation matrix (model.transform) with matrix generated by function parameters (matTransform) + model.transform = MatrixMultiply(model.transform, matTransform); + + for (int i = 0; i < model.meshCount; i++) + { + // TODO: Review color + tint premultiplication mechanism + Color color = model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color; + + Color colorTint = WHITE; + colorTint.r = (((float)color.r/255.0)*((float)tint.r/255.0))*255; + colorTint.g = (((float)color.g/255.0)*((float)tint.g/255.0))*255; + colorTint.b = (((float)color.b/255.0)*((float)tint.b/255.0))*255; + colorTint.a = (((float)color.a/255.0)*((float)tint.a/255.0))*255; + + model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color = colorTint; + rlDrawMesh(model.meshes[i], model.materials[model.meshMaterial[i]], model.transform); + model.materials[model.meshMaterial[i]].maps[MAP_DIFFUSE].color = color; + } +} + +// Draw a model wires (with texture if set) +void DrawModelWires(Model model, Vector3 position, float scale, Color tint) +{ + rlEnableWireMode(); + + DrawModel(model, position, scale, tint); + + rlDisableWireMode(); +} + +// Draw a model wires (with texture if set) with extended parameters +void DrawModelWiresEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) +{ + rlEnableWireMode(); + + DrawModelEx(model, position, rotationAxis, rotationAngle, scale, tint); + + rlDisableWireMode(); +} + +// Draw a billboard +void DrawBillboard(Camera camera, Texture2D texture, Vector3 center, float size, Color tint) +{ + Rectangle sourceRec = { 0.0f, 0.0f, (float)texture.width, (float)texture.height }; + + DrawBillboardRec(camera, texture, sourceRec, center, size, tint); +} + +// Draw a billboard (part of a texture defined by a rectangle) +void DrawBillboardRec(Camera camera, Texture2D texture, Rectangle sourceRec, Vector3 center, float size, Color tint) +{ + // NOTE: Billboard size will maintain sourceRec aspect ratio, size will represent billboard width + Vector2 sizeRatio = { size, size*(float)sourceRec.height/sourceRec.width }; + + Matrix matView = MatrixLookAt(camera.position, camera.target, camera.up); + + Vector3 right = { matView.m0, matView.m4, matView.m8 }; + //Vector3 up = { matView.m1, matView.m5, matView.m9 }; + + // NOTE: Billboard locked on axis-Y + Vector3 up = { 0.0f, 1.0f, 0.0f }; +/* + a-------b + | | + | * | + | | + d-------c +*/ + right = Vector3Scale(right, sizeRatio.x/2); + up = Vector3Scale(up, sizeRatio.y/2); + + Vector3 p1 = Vector3Add(right, up); + Vector3 p2 = Vector3Subtract(right, up); + + Vector3 a = Vector3Subtract(center, p2); + Vector3 b = Vector3Add(center, p1); + Vector3 c = Vector3Add(center, p2); + Vector3 d = Vector3Subtract(center, p1); + + if (rlCheckBufferLimit(4)) rlglDraw(); + + rlEnableTexture(texture.id); + + rlBegin(RL_QUADS); + rlColor4ub(tint.r, tint.g, tint.b, tint.a); + + // Bottom-left corner for texture and quad + rlTexCoord2f((float)sourceRec.x/texture.width, (float)sourceRec.y/texture.height); + rlVertex3f(a.x, a.y, a.z); + + // Top-left corner for texture and quad + rlTexCoord2f((float)sourceRec.x/texture.width, (float)(sourceRec.y + sourceRec.height)/texture.height); + rlVertex3f(d.x, d.y, d.z); + + // Top-right corner for texture and quad + rlTexCoord2f((float)(sourceRec.x + sourceRec.width)/texture.width, (float)(sourceRec.y + sourceRec.height)/texture.height); + rlVertex3f(c.x, c.y, c.z); + + // Bottom-right corner for texture and quad + rlTexCoord2f((float)(sourceRec.x + sourceRec.width)/texture.width, (float)sourceRec.y/texture.height); + rlVertex3f(b.x, b.y, b.z); + rlEnd(); + + rlDisableTexture(); +} + +// Draw a bounding box with wires +void DrawBoundingBox(BoundingBox box, Color color) +{ + Vector3 size; + + size.x = (float)fabs(box.max.x - box.min.x); + size.y = (float)fabs(box.max.y - box.min.y); + size.z = (float)fabs(box.max.z - box.min.z); + + Vector3 center = { box.min.x + size.x/2.0f, box.min.y + size.y/2.0f, box.min.z + size.z/2.0f }; + + DrawCubeWires(center, size.x, size.y, size.z, color); +} + +// Detect collision between two spheres +bool CheckCollisionSpheres(Vector3 centerA, float radiusA, Vector3 centerB, float radiusB) +{ + bool collision = false; + + // Simple way to check for collision, just checking distance between two points + // Unfortunately, sqrtf() is a costly operation, so we avoid it with following solution + /* + float dx = centerA.x - centerB.x; // X distance between centers + float dy = centerA.y - centerB.y; // Y distance between centers + float dz = centerA.z - centerB.z; // Z distance between centers + + float distance = sqrtf(dx*dx + dy*dy + dz*dz); // Distance between centers + + if (distance <= (radiusA + radiusB)) collision = true; + */ + + // Check for distances squared to avoid sqrtf() + if (Vector3DotProduct(Vector3Subtract(centerB, centerA), Vector3Subtract(centerB, centerA)) <= (radiusA + radiusB)*(radiusA + radiusB)) collision = true; + + return collision; +} + +// Detect collision between two boxes +// NOTE: Boxes are defined by two points minimum and maximum +bool CheckCollisionBoxes(BoundingBox box1, BoundingBox box2) +{ + bool collision = true; + + if ((box1.max.x >= box2.min.x) && (box1.min.x <= box2.max.x)) + { + if ((box1.max.y < box2.min.y) || (box1.min.y > box2.max.y)) collision = false; + if ((box1.max.z < box2.min.z) || (box1.min.z > box2.max.z)) collision = false; + } + else collision = false; + + return collision; +} + +// Detect collision between box and sphere +bool CheckCollisionBoxSphere(BoundingBox box, Vector3 center, float radius) +{ + bool collision = false; + + float dmin = 0; + + if (center.x < box.min.x) dmin += powf(center.x - box.min.x, 2); + else if (center.x > box.max.x) dmin += powf(center.x - box.max.x, 2); + + if (center.y < box.min.y) dmin += powf(center.y - box.min.y, 2); + else if (center.y > box.max.y) dmin += powf(center.y - box.max.y, 2); + + if (center.z < box.min.z) dmin += powf(center.z - box.min.z, 2); + else if (center.z > box.max.z) dmin += powf(center.z - box.max.z, 2); + + if (dmin <= (radius*radius)) collision = true; + + return collision; +} + +// Detect collision between ray and sphere +bool CheckCollisionRaySphere(Ray ray, Vector3 center, float radius) +{ + bool collision = false; + + Vector3 raySpherePos = Vector3Subtract(center, ray.position); + float distance = Vector3Length(raySpherePos); + float vector = Vector3DotProduct(raySpherePos, ray.direction); + float d = radius*radius - (distance*distance - vector*vector); + + if (d >= 0.0f) collision = true; + + return collision; +} + +// Detect collision between ray and sphere with extended parameters and collision point detection +bool CheckCollisionRaySphereEx(Ray ray, Vector3 center, float radius, Vector3 *collisionPoint) +{ + bool collision = false; + + Vector3 raySpherePos = Vector3Subtract(center, ray.position); + float distance = Vector3Length(raySpherePos); + float vector = Vector3DotProduct(raySpherePos, ray.direction); + float d = radius*radius - (distance*distance - vector*vector); + + if (d >= 0.0f) collision = true; + + // Check if ray origin is inside the sphere to calculate the correct collision point + float collisionDistance = 0; + + if (distance < radius) collisionDistance = vector + sqrtf(d); + else collisionDistance = vector - sqrtf(d); + + // Calculate collision point + Vector3 cPoint = Vector3Add(ray.position, Vector3Scale(ray.direction, collisionDistance)); + + collisionPoint->x = cPoint.x; + collisionPoint->y = cPoint.y; + collisionPoint->z = cPoint.z; + + return collision; +} + +// Detect collision between ray and bounding box +bool CheckCollisionRayBox(Ray ray, BoundingBox box) +{ + bool collision = false; + + float t[8]; + t[0] = (box.min.x - ray.position.x)/ray.direction.x; + t[1] = (box.max.x - ray.position.x)/ray.direction.x; + t[2] = (box.min.y - ray.position.y)/ray.direction.y; + t[3] = (box.max.y - ray.position.y)/ray.direction.y; + t[4] = (box.min.z - ray.position.z)/ray.direction.z; + t[5] = (box.max.z - ray.position.z)/ray.direction.z; + t[6] = (float)fmax(fmax(fmin(t[0], t[1]), fmin(t[2], t[3])), fmin(t[4], t[5])); + t[7] = (float)fmin(fmin(fmax(t[0], t[1]), fmax(t[2], t[3])), fmax(t[4], t[5])); + + collision = !(t[7] < 0 || t[6] > t[7]); + + return collision; +} + +// Get collision info between ray and model +RayHitInfo GetCollisionRayModel(Ray ray, Model model) +{ + RayHitInfo result = { 0 }; + + for (int m = 0; m < model.meshCount; m++) + { + // Check if meshhas vertex data on CPU for testing + if (model.meshes[m].vertices != NULL) + { + // model->mesh.triangleCount may not be set, vertexCount is more reliable + int triangleCount = model.meshes[m].vertexCount/3; + + // Test against all triangles in mesh + for (int i = 0; i < triangleCount; i++) + { + Vector3 a, b, c; + Vector3 *vertdata = (Vector3 *)model.meshes[m].vertices; + + if (model.meshes[m].indices) + { + a = vertdata[model.meshes[m].indices[i*3 + 0]]; + b = vertdata[model.meshes[m].indices[i*3 + 1]]; + c = vertdata[model.meshes[m].indices[i*3 + 2]]; + } + else + { + a = vertdata[i*3 + 0]; + b = vertdata[i*3 + 1]; + c = vertdata[i*3 + 2]; + } + + a = Vector3Transform(a, model.transform); + b = Vector3Transform(b, model.transform); + c = Vector3Transform(c, model.transform); + + RayHitInfo triHitInfo = GetCollisionRayTriangle(ray, a, b, c); + + if (triHitInfo.hit) + { + // Save the closest hit triangle + if ((!result.hit) || (result.distance > triHitInfo.distance)) result = triHitInfo; + } + } + } + } + + return result; +} + +// Get collision info between ray and triangle +// NOTE: Based on https://en.wikipedia.org/wiki/M%C3%B6ller%E2%80%93Trumbore_intersection_algorithm +RayHitInfo GetCollisionRayTriangle(Ray ray, Vector3 p1, Vector3 p2, Vector3 p3) +{ + #define EPSILON 0.000001 // A small number + + Vector3 edge1, edge2; + Vector3 p, q, tv; + float det, invDet, u, v, t; + RayHitInfo result = {0}; + + // Find vectors for two edges sharing V1 + edge1 = Vector3Subtract(p2, p1); + edge2 = Vector3Subtract(p3, p1); + + // Begin calculating determinant - also used to calculate u parameter + p = Vector3CrossProduct(ray.direction, edge2); + + // If determinant is near zero, ray lies in plane of triangle or ray is parallel to plane of triangle + det = Vector3DotProduct(edge1, p); + + // Avoid culling! + if ((det > -EPSILON) && (det < EPSILON)) return result; + + invDet = 1.0f/det; + + // Calculate distance from V1 to ray origin + tv = Vector3Subtract(ray.position, p1); + + // Calculate u parameter and test bound + u = Vector3DotProduct(tv, p)*invDet; + + // The intersection lies outside of the triangle + if ((u < 0.0f) || (u > 1.0f)) return result; + + // Prepare to test v parameter + q = Vector3CrossProduct(tv, edge1); + + // Calculate V parameter and test bound + v = Vector3DotProduct(ray.direction, q)*invDet; + + // The intersection lies outside of the triangle + if ((v < 0.0f) || ((u + v) > 1.0f)) return result; + + t = Vector3DotProduct(edge2, q)*invDet; + + if (t > EPSILON) + { + // Ray hit, get hit point and normal + result.hit = true; + result.distance = t; + result.hit = true; + result.normal = Vector3Normalize(Vector3CrossProduct(edge1, edge2)); + result.position = Vector3Add(ray.position, Vector3Scale(ray.direction, t)); + } + + return result; +} + +// Get collision info between ray and ground plane (Y-normal plane) +RayHitInfo GetCollisionRayGround(Ray ray, float groundHeight) +{ + #define EPSILON 0.000001 // A small number + + RayHitInfo result = { 0 }; + + if (fabs(ray.direction.y) > EPSILON) + { + float distance = (ray.position.y - groundHeight)/-ray.direction.y; + + if (distance >= 0.0) + { + result.hit = true; + result.distance = distance; + result.normal = (Vector3){ 0.0, 1.0, 0.0 }; + result.position = Vector3Add(ray.position, Vector3Scale(ray.direction, distance)); + } + } + + return result; +} + +//---------------------------------------------------------------------------------- +// Module specific Functions Definition +//---------------------------------------------------------------------------------- + +#if defined(SUPPORT_FILEFORMAT_OBJ) +// Load OBJ mesh data +static Model LoadOBJ(const char *fileName) +{ + Model model = { 0 }; + + tinyobj_attrib_t attrib; + tinyobj_shape_t *meshes = NULL; + unsigned int meshCount = 0; + + tinyobj_material_t *materials = NULL; + unsigned int materialCount = 0; + + int dataLength = 0; + char *data = NULL; + + // Load model data + FILE *objFile = fopen(fileName, "rb"); + + if (objFile != NULL) + { + fseek(objFile, 0, SEEK_END); + long length = ftell(objFile); // Get file size + fseek(objFile, 0, SEEK_SET); // Reset file pointer + + data = (char *)RL_MALLOC(length); + + fread(data, length, 1, objFile); + dataLength = length; + fclose(objFile); + } + + if (data != NULL) + { + unsigned int flags = TINYOBJ_FLAG_TRIANGULATE; + int ret = tinyobj_parse_obj(&attrib, &meshes, &meshCount, &materials, &materialCount, data, dataLength, flags); + + if (ret != TINYOBJ_SUCCESS) TraceLog(LOG_WARNING, "[%s] Model data could not be loaded", fileName); + else TraceLog(LOG_INFO, "[%s] Model data loaded successfully: %i meshes / %i materials", fileName, meshCount, materialCount); + + // Init model meshes array + // TODO: Support multiple meshes... in the meantime, only one mesh is returned + //model.meshCount = meshCount; + model.meshCount = 1; + model.meshes = (Mesh *)RL_CALLOC(model.meshCount, sizeof(Mesh)); + + // Init model materials array + if (materialCount > 0) + { + model.materialCount = materialCount; + model.materials = (Material *)RL_CALLOC(model.materialCount, sizeof(Material)); + } + + model.meshMaterial = (int *)RL_CALLOC(model.meshCount, sizeof(int)); + + /* + // Multiple meshes data reference + // NOTE: They are provided as a faces offset + typedef struct { + char *name; // group name or object name + unsigned int face_offset; + unsigned int length; + } tinyobj_shape_t; + */ + + // Init model meshes + for (int m = 0; m < 1; m++) + { + Mesh mesh = { 0 }; + memset(&mesh, 0, sizeof(Mesh)); + mesh.vertexCount = attrib.num_faces*3; + mesh.triangleCount = attrib.num_faces; + mesh.vertices = (float *)RL_CALLOC(mesh.vertexCount*3, sizeof(float)); + mesh.texcoords = (float *)RL_CALLOC(mesh.vertexCount*2, sizeof(float)); + mesh.normals = (float *)RL_CALLOC(mesh.vertexCount*3, sizeof(float)); + mesh.vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + int vCount = 0; + int vtCount = 0; + int vnCount = 0; + + for (int f = 0; f < attrib.num_faces; f++) + { + // Get indices for the face + tinyobj_vertex_index_t idx0 = attrib.faces[3*f + 0]; + tinyobj_vertex_index_t idx1 = attrib.faces[3*f + 1]; + tinyobj_vertex_index_t idx2 = attrib.faces[3*f + 2]; + + // TraceLog(LOG_DEBUG, "Face %i index: v %i/%i/%i . vt %i/%i/%i . vn %i/%i/%i\n", f, idx0.v_idx, idx1.v_idx, idx2.v_idx, idx0.vt_idx, idx1.vt_idx, idx2.vt_idx, idx0.vn_idx, idx1.vn_idx, idx2.vn_idx); + + // Fill vertices buffer (float) using vertex index of the face + for (int v = 0; v < 3; v++) { mesh.vertices[vCount + v] = attrib.vertices[idx0.v_idx*3 + v]; } vCount +=3; + for (int v = 0; v < 3; v++) { mesh.vertices[vCount + v] = attrib.vertices[idx1.v_idx*3 + v]; } vCount +=3; + for (int v = 0; v < 3; v++) { mesh.vertices[vCount + v] = attrib.vertices[idx2.v_idx*3 + v]; } vCount +=3; + + // Fill texcoords buffer (float) using vertex index of the face + // NOTE: Y-coordinate must be flipped upside-down + mesh.texcoords[vtCount + 0] = attrib.texcoords[idx0.vt_idx*2 + 0]; + mesh.texcoords[vtCount + 1] = 1.0f - attrib.texcoords[idx0.vt_idx*2 + 1]; vtCount += 2; + mesh.texcoords[vtCount + 0] = attrib.texcoords[idx1.vt_idx*2 + 0]; + mesh.texcoords[vtCount + 1] = 1.0f - attrib.texcoords[idx1.vt_idx*2 + 1]; vtCount += 2; + mesh.texcoords[vtCount + 0] = attrib.texcoords[idx2.vt_idx*2 + 0]; + mesh.texcoords[vtCount + 1] = 1.0f - attrib.texcoords[idx2.vt_idx*2 + 1]; vtCount += 2; + + // Fill normals buffer (float) using vertex index of the face + for (int v = 0; v < 3; v++) { mesh.normals[vnCount + v] = attrib.normals[idx0.vn_idx*3 + v]; } vnCount +=3; + for (int v = 0; v < 3; v++) { mesh.normals[vnCount + v] = attrib.normals[idx1.vn_idx*3 + v]; } vnCount +=3; + for (int v = 0; v < 3; v++) { mesh.normals[vnCount + v] = attrib.normals[idx2.vn_idx*3 + v]; } vnCount +=3; + } + + model.meshes[m] = mesh; // Assign mesh data to model + + // Assign mesh material for current mesh + model.meshMaterial[m] = attrib.material_ids[m]; + + // Set unfound materials to default + if (model.meshMaterial[m] == -1) model.meshMaterial[m] = 0; + } + + // Init model materials + for (int m = 0; m < materialCount; m++) + { + // Init material to default + // NOTE: Uses default shader, only MAP_DIFFUSE supported + model.materials[m] = LoadMaterialDefault(); + + /* + typedef struct { + char *name; + + float ambient[3]; + float diffuse[3]; + float specular[3]; + float transmittance[3]; + float emission[3]; + float shininess; + float ior; // index of refraction + float dissolve; // 1 == opaque; 0 == fully transparent + // illumination model (Ref: http://www.fileformat.info/format/material/) + int illum; + + int pad0; + + char *ambient_texname; // map_Ka + char *diffuse_texname; // map_Kd + char *specular_texname; // map_Ks + char *specular_highlight_texname; // map_Ns + char *bump_texname; // map_bump, bump + char *displacement_texname; // disp + char *alpha_texname; // map_d + } tinyobj_material_t; + */ + + model.materials[m].maps[MAP_DIFFUSE].texture = GetTextureDefault(); // Get default texture, in case no texture is defined + + if (materials[m].diffuse_texname != NULL) model.materials[m].maps[MAP_DIFFUSE].texture = LoadTexture(materials[m].diffuse_texname); //char *diffuse_texname; // map_Kd + model.materials[m].maps[MAP_DIFFUSE].color = (Color){ (float)(materials[m].diffuse[0]*255.0f), (float)(materials[m].diffuse[1]*255.0f), (float)(materials[m].diffuse[2]*255.0f), 255 }; //float diffuse[3]; + model.materials[m].maps[MAP_DIFFUSE].value = 0.0f; + + if (materials[m].specular_texname != NULL) model.materials[m].maps[MAP_SPECULAR].texture = LoadTexture(materials[m].specular_texname); //char *specular_texname; // map_Ks + model.materials[m].maps[MAP_SPECULAR].color = (Color){ (float)(materials[m].specular[0]*255.0f), (float)(materials[m].specular[1]*255.0f), (float)(materials[m].specular[2]*255.0f), 255 }; //float specular[3]; + model.materials[m].maps[MAP_SPECULAR].value = 0.0f; + + if (materials[m].bump_texname != NULL) model.materials[m].maps[MAP_NORMAL].texture = LoadTexture(materials[m].bump_texname); //char *bump_texname; // map_bump, bump + model.materials[m].maps[MAP_NORMAL].color = WHITE; + model.materials[m].maps[MAP_NORMAL].value = materials[m].shininess; + + model.materials[m].maps[MAP_EMISSION].color = (Color){ (float)(materials[m].emission[0]*255.0f), (float)(materials[m].emission[1]*255.0f), (float)(materials[m].emission[2]*255.0f), 255 }; //float emission[3]; + + if (materials[m].displacement_texname != NULL) model.materials[m].maps[MAP_HEIGHT].texture = LoadTexture(materials[m].displacement_texname); //char *displacement_texname; // disp + } + + tinyobj_attrib_free(&attrib); + tinyobj_shapes_free(meshes, meshCount); + tinyobj_materials_free(materials, materialCount); + + RL_FREE(data); + } + + // NOTE: At this point we have all model data loaded + TraceLog(LOG_INFO, "[%s] Model loaded successfully in RAM (CPU)", fileName); + + return model; +} +#endif + +#if defined(SUPPORT_FILEFORMAT_IQM) +// Load IQM mesh data +static Model LoadIQM(const char *fileName) +{ + #define IQM_MAGIC "INTERQUAKEMODEL" // IQM file magic number + #define IQM_VERSION 2 // only IQM version 2 supported + + #define BONE_NAME_LENGTH 32 // BoneInfo name string length + #define MESH_NAME_LENGTH 32 // Mesh name string length + + // IQM file structs + //----------------------------------------------------------------------------------- + typedef struct IQMHeader { + char magic[16]; + unsigned int version; + unsigned int filesize; + unsigned int flags; + unsigned int num_text, ofs_text; + unsigned int num_meshes, ofs_meshes; + unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays; + unsigned int num_triangles, ofs_triangles, ofs_adjacency; + unsigned int num_joints, ofs_joints; + unsigned int num_poses, ofs_poses; + unsigned int num_anims, ofs_anims; + unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds; + unsigned int num_comment, ofs_comment; + unsigned int num_extensions, ofs_extensions; + } IQMHeader; + + typedef struct IQMMesh { + unsigned int name; + unsigned int material; + unsigned int first_vertex, num_vertexes; + unsigned int first_triangle, num_triangles; + } IQMMesh; + + typedef struct IQMTriangle { + unsigned int vertex[3]; + } IQMTriangle; + + typedef struct IQMJoint { + unsigned int name; + int parent; + float translate[3], rotate[4], scale[3]; + } IQMJoint; + + typedef struct IQMVertexArray { + unsigned int type; + unsigned int flags; + unsigned int format; + unsigned int size; + unsigned int offset; + } IQMVertexArray; + + // NOTE: Below IQM structures are not used but listed for reference + /* + typedef struct IQMAdjacency { + unsigned int triangle[3]; + } IQMAdjacency; + + typedef struct IQMPose { + int parent; + unsigned int mask; + float channeloffset[10]; + float channelscale[10]; + } IQMPose; + + typedef struct IQMAnim { + unsigned int name; + unsigned int first_frame, num_frames; + float framerate; + unsigned int flags; + } IQMAnim; + + typedef struct IQMBounds { + float bbmin[3], bbmax[3]; + float xyradius, radius; + } IQMBounds; + */ + //----------------------------------------------------------------------------------- + + // IQM vertex data types + typedef enum { + IQM_POSITION = 0, + IQM_TEXCOORD = 1, + IQM_NORMAL = 2, + IQM_TANGENT = 3, // NOTE: Tangents unused by default + IQM_BLENDINDEXES = 4, + IQM_BLENDWEIGHTS = 5, + IQM_COLOR = 6, // NOTE: Vertex colors unused by default + IQM_CUSTOM = 0x10 // NOTE: Custom vertex values unused by default + } IQMVertexType; + + Model model = { 0 }; + + FILE *iqmFile; + IQMHeader iqm; + + IQMMesh *imesh; + IQMTriangle *tri; + IQMVertexArray *va; + IQMJoint *ijoint; + + float *vertex = NULL; + float *normal = NULL; + float *text = NULL; + char *blendi = NULL; + unsigned char *blendw = NULL; + + iqmFile = fopen(fileName, "rb"); + + if (iqmFile == NULL) + { + TraceLog(LOG_WARNING, "[%s] IQM file could not be opened", fileName); + return model; + } + + fread(&iqm,sizeof(IQMHeader), 1, iqmFile); // Read IQM header + + if (strncmp(iqm.magic, IQM_MAGIC, sizeof(IQM_MAGIC))) + { + TraceLog(LOG_WARNING, "[%s] IQM file does not seem to be valid", fileName); + fclose(iqmFile); + return model; + } + + if (iqm.version != IQM_VERSION) + { + TraceLog(LOG_WARNING, "[%s] IQM file version is not supported (%i).", fileName, iqm.version); + fclose(iqmFile); + return model; + } + + // Meshes data processing + imesh = RL_MALLOC(sizeof(IQMMesh)*iqm.num_meshes); + fseek(iqmFile, iqm.ofs_meshes, SEEK_SET); + fread(imesh, sizeof(IQMMesh)*iqm.num_meshes, 1, iqmFile); + + model.meshCount = iqm.num_meshes; + model.meshes = RL_CALLOC(model.meshCount, sizeof(Mesh)); + + char name[MESH_NAME_LENGTH] = { 0 }; + + for (int i = 0; i < model.meshCount; i++) + { + fseek(iqmFile, iqm.ofs_text + imesh[i].name, SEEK_SET); + fread(name, sizeof(char)*MESH_NAME_LENGTH, 1, iqmFile); // Mesh name not used... + model.meshes[i].vertexCount = imesh[i].num_vertexes; + + model.meshes[i].vertices = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); // Default vertex positions + model.meshes[i].normals = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); // Default vertex normals + model.meshes[i].texcoords = RL_CALLOC(model.meshes[i].vertexCount*2, sizeof(float)); // Default vertex texcoords + + model.meshes[i].boneIds = RL_CALLOC(model.meshes[i].vertexCount*4, sizeof(float)); // Up-to 4 bones supported! + model.meshes[i].boneWeights = RL_CALLOC(model.meshes[i].vertexCount*4, sizeof(float)); // Up-to 4 bones supported! + + model.meshes[i].triangleCount = imesh[i].num_triangles; + model.meshes[i].indices = RL_CALLOC(model.meshes[i].triangleCount*3, sizeof(unsigned short)); + + // Animated verted data, what we actually process for rendering + // NOTE: Animated vertex should be re-uploaded to GPU (if not using GPU skinning) + model.meshes[i].animVertices = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); + model.meshes[i].animNormals = RL_CALLOC(model.meshes[i].vertexCount*3, sizeof(float)); + + model.meshes[i].vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + } + + // Triangles data processing + tri = RL_MALLOC(iqm.num_triangles*sizeof(IQMTriangle)); + fseek(iqmFile, iqm.ofs_triangles, SEEK_SET); + fread(tri, iqm.num_triangles*sizeof(IQMTriangle), 1, iqmFile); + + for (int m = 0; m < model.meshCount; m++) + { + int tcounter = 0; + + for (int i = imesh[m].first_triangle; i < (imesh[m].first_triangle + imesh[m].num_triangles); i++) + { + // IQM triangles are stored counter clockwise, but raylib sets opengl to clockwise drawing, so we swap them around + model.meshes[m].indices[tcounter + 2] = tri[i].vertex[0] - imesh[m].first_vertex; + model.meshes[m].indices[tcounter + 1] = tri[i].vertex[1] - imesh[m].first_vertex; + model.meshes[m].indices[tcounter] = tri[i].vertex[2] - imesh[m].first_vertex; + tcounter += 3; + } + } + + // Vertex arrays data processing + va = RL_MALLOC(iqm.num_vertexarrays*sizeof(IQMVertexArray)); + fseek(iqmFile, iqm.ofs_vertexarrays, SEEK_SET); + fread(va, iqm.num_vertexarrays*sizeof(IQMVertexArray), 1, iqmFile); + + for (int i = 0; i < iqm.num_vertexarrays; i++) + { + switch (va[i].type) + { + case IQM_POSITION: + { + vertex = RL_MALLOC(iqm.num_vertexes*3*sizeof(float)); + fseek(iqmFile, va[i].offset, SEEK_SET); + fread(vertex, iqm.num_vertexes*3*sizeof(float), 1, iqmFile); + + for (int m = 0; m < iqm.num_meshes; m++) + { + int vCounter = 0; + for (int i = imesh[m].first_vertex*3; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*3; i++) + { + model.meshes[m].vertices[vCounter] = vertex[i]; + model.meshes[m].animVertices[vCounter] = vertex[i]; + vCounter++; + } + } + } break; + case IQM_NORMAL: + { + normal = RL_MALLOC(iqm.num_vertexes*3*sizeof(float)); + fseek(iqmFile, va[i].offset, SEEK_SET); + fread(normal, iqm.num_vertexes*3*sizeof(float), 1, iqmFile); + + for (int m = 0; m < iqm.num_meshes; m++) + { + int vCounter = 0; + for (int i = imesh[m].first_vertex*3; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*3; i++) + { + model.meshes[m].normals[vCounter] = normal[i]; + model.meshes[m].animNormals[vCounter] = normal[i]; + vCounter++; + } + } + } break; + case IQM_TEXCOORD: + { + text = RL_MALLOC(iqm.num_vertexes*2*sizeof(float)); + fseek(iqmFile, va[i].offset, SEEK_SET); + fread(text, iqm.num_vertexes*2*sizeof(float), 1, iqmFile); + + for (int m = 0; m < iqm.num_meshes; m++) + { + int vCounter = 0; + for (int i = imesh[m].first_vertex*2; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*2; i++) + { + model.meshes[m].texcoords[vCounter] = text[i]; + vCounter++; + } + } + } break; + case IQM_BLENDINDEXES: + { + blendi = RL_MALLOC(iqm.num_vertexes*4*sizeof(char)); + fseek(iqmFile, va[i].offset, SEEK_SET); + fread(blendi, iqm.num_vertexes*4*sizeof(char), 1, iqmFile); + + for (int m = 0; m < iqm.num_meshes; m++) + { + int boneCounter = 0; + for (int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++) + { + model.meshes[m].boneIds[boneCounter] = blendi[i]; + boneCounter++; + } + } + } break; + case IQM_BLENDWEIGHTS: + { + blendw = RL_MALLOC(iqm.num_vertexes*4*sizeof(unsigned char)); + fseek(iqmFile, va[i].offset, SEEK_SET); + fread(blendw, iqm.num_vertexes*4*sizeof(unsigned char), 1, iqmFile); + + for (int m = 0; m < iqm.num_meshes; m++) + { + int boneCounter = 0; + for (int i = imesh[m].first_vertex*4; i < (imesh[m].first_vertex + imesh[m].num_vertexes)*4; i++) + { + model.meshes[m].boneWeights[boneCounter] = blendw[i]/255.0f; + boneCounter++; + } + } + } break; + } + } + + // Bones (joints) data processing + ijoint = RL_MALLOC(iqm.num_joints*sizeof(IQMJoint)); + fseek(iqmFile, iqm.ofs_joints, SEEK_SET); + fread(ijoint, iqm.num_joints*sizeof(IQMJoint), 1, iqmFile); + + model.boneCount = iqm.num_joints; + model.bones = RL_MALLOC(iqm.num_joints*sizeof(BoneInfo)); + model.bindPose = RL_MALLOC(iqm.num_joints*sizeof(Transform)); + + for (int i = 0; i < iqm.num_joints; i++) + { + // Bones + model.bones[i].parent = ijoint[i].parent; + fseek(iqmFile, iqm.ofs_text + ijoint[i].name, SEEK_SET); + fread(model.bones[i].name, BONE_NAME_LENGTH*sizeof(char), 1, iqmFile); + + // Bind pose (base pose) + model.bindPose[i].translation.x = ijoint[i].translate[0]; + model.bindPose[i].translation.y = ijoint[i].translate[1]; + model.bindPose[i].translation.z = ijoint[i].translate[2]; + + model.bindPose[i].rotation.x = ijoint[i].rotate[0]; + model.bindPose[i].rotation.y = ijoint[i].rotate[1]; + model.bindPose[i].rotation.z = ijoint[i].rotate[2]; + model.bindPose[i].rotation.w = ijoint[i].rotate[3]; + + model.bindPose[i].scale.x = ijoint[i].scale[0]; + model.bindPose[i].scale.y = ijoint[i].scale[1]; + model.bindPose[i].scale.z = ijoint[i].scale[2]; + } + + // Build bind pose from parent joints + for (int i = 0; i < model.boneCount; i++) + { + if (model.bones[i].parent >= 0) + { + model.bindPose[i].rotation = QuaternionMultiply(model.bindPose[model.bones[i].parent].rotation, model.bindPose[i].rotation); + model.bindPose[i].translation = Vector3RotateByQuaternion(model.bindPose[i].translation, model.bindPose[model.bones[i].parent].rotation); + model.bindPose[i].translation = Vector3Add(model.bindPose[i].translation, model.bindPose[model.bones[i].parent].translation); + model.bindPose[i].scale = Vector3MultiplyV(model.bindPose[i].scale, model.bindPose[model.bones[i].parent].scale); + } + } + + fclose(iqmFile); + RL_FREE(imesh); + RL_FREE(tri); + RL_FREE(va); + RL_FREE(vertex); + RL_FREE(normal); + RL_FREE(text); + RL_FREE(blendi); + RL_FREE(blendw); + RL_FREE(ijoint); + + return model; +} +#endif + +#if defined(SUPPORT_FILEFORMAT_GLTF) + +static const unsigned char base64Table[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 62, 0, 0, 0, 63, 52, 53, + 54, 55, 56, 57, 58, 59, 60, 61, 0, 0, + 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, + 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, + 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 0, 0, 0, 0, 0, 0, 26, 27, 28, + 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, + 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51 +}; + +static int GetSizeBase64(char *input) +{ + int size = 0; + + for (int i = 0; input[4*i] != 0; i++) + { + if (input[4*i + 3] == '=') + { + if (input[4*i + 2] == '=') size += 1; + else size += 2; + } + else size += 3; + } + + return size; +} + +static unsigned char *DecodeBase64(char *input, int *size) +{ + *size = GetSizeBase64(input); + + unsigned char *buf = (unsigned char *)RL_MALLOC(*size); + for (int i = 0; i < *size/3; i++) + { + unsigned char a = base64Table[(int)input[4*i]]; + unsigned char b = base64Table[(int)input[4*i + 1]]; + unsigned char c = base64Table[(int)input[4*i + 2]]; + unsigned char d = base64Table[(int)input[4*i + 3]]; + + buf[3*i] = (a << 2) | (b >> 4); + buf[3*i + 1] = (b << 4) | (c >> 2); + buf[3*i + 2] = (c << 6) | d; + } + + if (*size%3 == 1) + { + int n = *size/3; + unsigned char a = base64Table[(int)input[4*n]]; + unsigned char b = base64Table[(int)input[4*n + 1]]; + buf[*size - 1] = (a << 2) | (b >> 4); + } + else if (*size%3 == 2) + { + int n = *size/3; + unsigned char a = base64Table[(int)input[4*n]]; + unsigned char b = base64Table[(int)input[4*n + 1]]; + unsigned char c = base64Table[(int)input[4*n + 2]]; + buf[*size - 2] = (a << 2) | (b >> 4); + buf[*size - 1] = (b << 4) | (c >> 2); + } + return buf; +} + +// Load texture from cgltf_image +static Texture LoadTextureFromCgltfImage(cgltf_image *image, const char *texPath, Color tint) +{ + Texture texture = { 0 }; + + if (image->uri) + { + if ((strlen(image->uri) > 5) && + (image->uri[0] == 'd') && + (image->uri[1] == 'a') && + (image->uri[2] == 't') && + (image->uri[3] == 'a') && + (image->uri[4] == ':')) + { + // Data URI + // Format: data:<mediatype>;base64,<data> + + // Find the comma + int i = 0; + while ((image->uri[i] != ',') && (image->uri[i] != 0)) i++; + + if (image->uri[i] == 0) TraceLog(LOG_WARNING, "CGLTF Image: Invalid data URI"); + else + { + int size; + unsigned char *data = DecodeBase64(image->uri + i + 1, &size); + + int w, h; + unsigned char *raw = stbi_load_from_memory(data, size, &w, &h, NULL, 4); + + Image rimage = LoadImagePro(raw, w, h, UNCOMPRESSED_R8G8B8A8); + + // TODO: Tint shouldn't be applied here! + ImageColorTint(&rimage, tint); + texture = LoadTextureFromImage(rimage); + UnloadImage(rimage); + } + } + else + { + Image rimage = LoadImage(TextFormat("%s/%s", texPath, image->uri)); + + // TODO: Tint shouldn't be applied here! + ImageColorTint(&rimage, tint); + texture = LoadTextureFromImage(rimage); + UnloadImage(rimage); + } + } + else if (image->buffer_view) + { + unsigned char *data = RL_MALLOC(image->buffer_view->size); + int n = image->buffer_view->offset; + int stride = image->buffer_view->stride ? image->buffer_view->stride : 1; + + for (int i = 0; i < image->buffer_view->size; i++) + { + data[i] = ((unsigned char *)image->buffer_view->buffer->data)[n]; + n += stride; + } + + int w, h; + unsigned char *raw = stbi_load_from_memory(data, image->buffer_view->size, &w, &h, NULL, 4); + free(data); + + Image rimage = LoadImagePro(raw, w, h, UNCOMPRESSED_R8G8B8A8); + free(raw); + + // TODO: Tint shouldn't be applied here! + ImageColorTint(&rimage, tint); + texture = LoadTextureFromImage(rimage); + UnloadImage(rimage); + } + else + { + Image rimage = LoadImageEx(&tint, 1, 1); + texture = LoadTextureFromImage(rimage); + UnloadImage(rimage); + } + + return texture; +} + +// Load glTF mesh data +static Model LoadGLTF(const char *fileName) +{ + /*********************************************************************************** + + Function implemented by Wilhem Barbier (@wbrbr) + + Features: + - Supports .gltf and .glb files + - Supports embedded (base64) or external textures + - Loads the albedo/diffuse texture (other maps could be added) + - Supports multiple mesh per model and multiple primitives per model + + Some restrictions (not exhaustive): + - Triangle-only meshes + - Not supported node hierarchies or transforms + - Only loads the diffuse texture... but not too hard to support other maps (normal, roughness/metalness...) + - Only supports unsigned short indices (no byte/unsigned int) + - Only supports float for texture coordinates (no byte/unsigned short) + + *************************************************************************************/ + + #define LOAD_ACCESSOR(type, nbcomp, acc, dst) \ + { \ + int n = 0; \ + type* buf = (type*)acc->buffer_view->buffer->data+acc->buffer_view->offset/sizeof(type)+acc->offset/sizeof(type); \ + for (int k = 0; k < acc->count; k++) {\ + for (int l = 0; l < nbcomp; l++) {\ + dst[nbcomp*k+l] = buf[n+l];\ + }\ + n += acc->stride/sizeof(type);\ + }\ + } + + Model model = { 0 }; + + // glTF file loading + FILE *gltfFile = fopen(fileName, "rb"); + + if (gltfFile == NULL) + { + TraceLog(LOG_WARNING, "[%s] glTF file could not be opened", fileName); + return model; + } + + fseek(gltfFile, 0, SEEK_END); + int size = ftell(gltfFile); + fseek(gltfFile, 0, SEEK_SET); + + void *buffer = RL_MALLOC(size); + fread(buffer, size, 1, gltfFile); + + fclose(gltfFile); + + // glTF data loading + cgltf_options options = { 0 }; + cgltf_data *data = NULL; + cgltf_result result = cgltf_parse(&options, buffer, size, &data); + + if (result == cgltf_result_success) + { + TraceLog(LOG_INFO, "[%s][%s] Model meshes/materials: %i/%i", fileName, (data->file_type == 2)? "glb" : "gltf", data->meshes_count, data->materials_count); + + // Read data buffers + result = cgltf_load_buffers(&options, data, fileName); + if (result != cgltf_result_success) TraceLog(LOG_INFO, "[%s][%s] Error loading mesh/material buffers", fileName, (data->file_type == 2)? "glb" : "gltf"); + + int primitivesCount = 0; + + for (int i = 0; i < data->meshes_count; i++) primitivesCount += (int)data->meshes[i].primitives_count; + + // Process glTF data and map to model + model.meshCount = primitivesCount; + model.meshes = RL_CALLOC(model.meshCount, sizeof(Mesh)); + model.materialCount = data->materials_count + 1; + model.materials = RL_MALLOC(model.materialCount*sizeof(Material)); + model.meshMaterial = RL_MALLOC(model.meshCount*sizeof(int)); + + for (int i = 0; i < model.meshCount; i++) model.meshes[i].vboId = (unsigned int *)RL_CALLOC(MAX_MESH_VBO, sizeof(unsigned int)); + + //For each material + for (int i = 0; i < model.materialCount - 1; i++) + { + model.materials[i] = LoadMaterialDefault(); + Color tint = (Color){ 255, 255, 255, 255 }; + const char *texPath = GetDirectoryPath(fileName); + + //Ensure material follows raylib support for PBR (metallic/roughness flow) + if (data->materials[i].has_pbr_metallic_roughness) + { + float roughness = data->materials[i].pbr_metallic_roughness.roughness_factor; + float metallic = data->materials[i].pbr_metallic_roughness.metallic_factor; + + // NOTE: Material name not used for the moment + //if (model.materials[i].name && data->materials[i].name) strcpy(model.materials[i].name, data->materials[i].name); + + // TODO: REview: shouldn't these be *255 ??? + tint.r = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[0]*255); + tint.g = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[1]*255); + tint.b = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[2]*255); + tint.a = (unsigned char)(data->materials[i].pbr_metallic_roughness.base_color_factor[3]*255); + + model.materials[i].maps[MAP_ROUGHNESS].color = tint; + + if (data->materials[i].pbr_metallic_roughness.base_color_texture.texture) + { + model.materials[i].maps[MAP_ALBEDO].texture = LoadTextureFromCgltfImage(data->materials[i].pbr_metallic_roughness.base_color_texture.texture->image, texPath, tint); + } + + // NOTE: Tint isn't need for other textures.. pass null or clear? + // Just set as white, multiplying by white has no effect + tint = WHITE; + + if (data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture) + { + model.materials[i].maps[MAP_ROUGHNESS].texture = LoadTextureFromCgltfImage(data->materials[i].pbr_metallic_roughness.metallic_roughness_texture.texture->image, texPath, tint); + } + model.materials[i].maps[MAP_ROUGHNESS].value = roughness; + model.materials[i].maps[MAP_METALNESS].value = metallic; + + if (data->materials[i].normal_texture.texture) + { + model.materials[i].maps[MAP_NORMAL].texture = LoadTextureFromCgltfImage(data->materials[i].normal_texture.texture->image, texPath, tint); + } + + if (data->materials[i].occlusion_texture.texture) + { + model.materials[i].maps[MAP_OCCLUSION].texture = LoadTextureFromCgltfImage(data->materials[i].occlusion_texture.texture->image, texPath, tint); + } + } + } + + model.materials[model.materialCount - 1] = LoadMaterialDefault(); + + int primitiveIndex = 0; + + for (int i = 0; i < data->meshes_count; i++) + { + for (int p = 0; p < data->meshes[i].primitives_count; p++) + { + for (int j = 0; j < data->meshes[i].primitives[p].attributes_count; j++) + { + if (data->meshes[i].primitives[p].attributes[j].type == cgltf_attribute_type_position) + { + cgltf_accessor *acc = data->meshes[i].primitives[p].attributes[j].data; + model.meshes[primitiveIndex].vertexCount = acc->count; + model.meshes[primitiveIndex].vertices = RL_MALLOC(sizeof(float)*model.meshes[primitiveIndex].vertexCount*3); + + LOAD_ACCESSOR(float, 3, acc, model.meshes[primitiveIndex].vertices) + } + else if (data->meshes[i].primitives[p].attributes[j].type == cgltf_attribute_type_normal) + { + cgltf_accessor *acc = data->meshes[i].primitives[p].attributes[j].data; + model.meshes[primitiveIndex].normals = RL_MALLOC(sizeof(float)*acc->count*3); + + LOAD_ACCESSOR(float, 3, acc, model.meshes[primitiveIndex].normals) + } + else if (data->meshes[i].primitives[p].attributes[j].type == cgltf_attribute_type_texcoord) + { + cgltf_accessor *acc = data->meshes[i].primitives[p].attributes[j].data; + + if (acc->component_type == cgltf_component_type_r_32f) + { + model.meshes[primitiveIndex].texcoords = RL_MALLOC(sizeof(float)*acc->count*2); + LOAD_ACCESSOR(float, 2, acc, model.meshes[primitiveIndex].texcoords) + } + else + { + // TODO: Support normalized unsigned byte/unsigned short texture coordinates + TraceLog(LOG_WARNING, "[%s] Texture coordinates must be float", fileName); + } + } + } + + cgltf_accessor *acc = data->meshes[i].primitives[p].indices; + + if (acc) + { + if (acc->component_type == cgltf_component_type_r_16u) + { + model.meshes[primitiveIndex].triangleCount = acc->count/3; + model.meshes[primitiveIndex].indices = RL_MALLOC(sizeof(unsigned short)*model.meshes[primitiveIndex].triangleCount*3); + LOAD_ACCESSOR(unsigned short, 1, acc, model.meshes[primitiveIndex].indices) + } + else + { + // TODO: Support unsigned byte/unsigned int + TraceLog(LOG_WARNING, "[%s] Indices must be unsigned short", fileName); + } + } + else + { + // Unindexed mesh + model.meshes[primitiveIndex].triangleCount = model.meshes[primitiveIndex].vertexCount/3; + } + + if (data->meshes[i].primitives[p].material) + { + // Compute the offset + model.meshMaterial[primitiveIndex] = data->meshes[i].primitives[p].material - data->materials; + } + else + { + model.meshMaterial[primitiveIndex] = model.materialCount - 1;; + } + + primitiveIndex++; + } + } + + cgltf_free(data); + } + else TraceLog(LOG_WARNING, "[%s] glTF data could not be loaded", fileName); + + RL_FREE(buffer); + + return model; +} +#endif |